Kenley Jansen

RP · Boston Red Sox

Bats S Throws R
Height 6'5" Weight 275
DOB 1987-09-30 Age 36.5
Hometown Willemstad, Curacao
2024 Fantasy Rankings

NFBC ADP (15-team): 10.15, 150th

Season Projections

SourceFPtsGIPWLSVBLSVHLDKBBHHRHBPRERERAWHIP
ATC309.05455.23328016621478227243.941.23
Draft Buddy314.05758.03429016923509228264.031.26
Steamer351.16464.03332027626559331294.131.27
THE BAT332.55555.02232026222458327264.001.17
Zeile326.36058.4333011682350000263.941.23

ATC projections by Ariel Cohen. Draft Buddy projections by Mike MacGregor. Steamer projections by Steamer Projections Blog. THE BAT projections by Derek Carty. Zeile Consensus projections by FantasyPros.

Fantasy Baseball News Last 90 Days

  • Kenley Jansen Dealing With Sore Back

    Headshot for Kenley Jansen

    Boston Red Sox closer Kenley Jansen (back), who closed out the Los Angeles Angels in an 8-6 victory on Friday night for his third save of the year, is dealing with a sore back but had enough to close out the game. The 36-year-old active MLB leader in saves struck one batter in his clean frame on Friday and has now tossed four scoreless and hitless innings with three saves, five walks and six strikeouts in his first four appearances of 2024. He has been perfect so far, but it looks like his back issues from spring training are still around, and his command has been worrisome despite the three saves. Keep an eye on whether Jansen will be available to pitch on Saturday against the Halos. If he's not, either Chris Martin or Josh Winckowski could be in line for a save opportunity.

    Apr 6 · Source via Closers Boston Red Sox Kenley Jansen
  • Kenley Jansen Available From Boston's Bullpen

    Headshot for Kenley Jansen

    Boston Red Sox manager Alex Cora says closer Kenley Jansen (back) is available on Monday for the start of a three-game series against the Oakland Athletics. "He had a great day yesterday," Cora said. Jansen was unavailable out of Boston's bullpen for Saturday's extra-inning defeat to the Seattle Mariners due to back tightness, but he's ready to roll on Monday if a save opportunity presents itself. After collecting an Opening Day save to protect last Thursday's win over Seattle, the 36-year-old All-Star should remain a solid fantasy closer this season as long as he's in Beantown. Jansen collected a 3.63 ERA, 1.27 WHIP, and 52:17 K:BB over 44 2/3 innings for the BoSox last year, but he has an expiring contract that could make him a trade candidate later this summer.

    Apr 1 · Source via Closers Boston Red Sox Kenley Jansen
  • Kenley Jansen Unavailable In Loss Due To Back Tightness

    Headshot for Kenley Jansen

    Boston Red Sox closer Kenley Jansen was unavailable to pitch in Saturday's 4-3 loss to the Mariners due to back tightness. Instead, the team turned to Joely Rodriguez and Justin Slaten in the bottom of the tenth in an attempt to preserve the win after the Sox scored two in the top of the inning, but the two pitchers combined to allow three hits, three runs, and a walk-off win for Seattle. Jansen dealt with the same injury in the spring but was able to pitch on Thursday when the Red Sox beat the Mariners 6-4, however, he woke up Friday and his back was tight. While the blown game is not ideal for the Red Sox, hopefully Jansen just needs some rest and he'll be back out there soon, however, fantasy managers will want to keep an eye on this. Veteran RHP Chris Martin would be next in line in the event of a prolonged absence.

    Mar 31 · Source via Closers Boston Red Sox Kenley Jansen Chris Martin Joely Rodriguez Justin Slaten
  • Kenley Jansen Records First Save

    Headshot for Kenley Jansen

    Boston Red Sox closer Kenley Jansen recorded his first save of the season in Thursday's victory against the Seattle Mariners. The veteran allowed a walk, but also recorded a pair of strikeouts. Despite dealing with back issues this spring, Jansen was ready and looked good to go on Opening Day. Even at age 36, Jansen remains a solid option for managers out of the bullpen. The veteran was rumored to be on the trade block this offseason, so it would not be the worst idea for Jansen managers to consider rostering Chris Martin if the Red Sox get off to a slow start and the rumors pick back up.

    Mar 29 · Source via Closers Boston Red Sox Kenley Jansen
  • Kenley Jansen Expects To Be Ready For Opening Day

    Headshot for Kenley Jansen

    Boston Red Sox closer Kenley Jansen (back) said he felt good in his return to Grapefruit League action on Thursday night against the Baltimore Orioles and expects to be ready for Opening Day on March 28 next Thursday. Jansen said he didn't feel good until Thursday and that he's been battling lat, shoulder and back issues throughout spring training. The 36-year-old veteran right-hander looked like his dominant self in a perfect inning of work against Baltimore, which is great news for fantasy managers that already have Jansen rostered. It was just his second appearance of the spring, though, and MLB's active leader in saves should be considered a pretty big injury risk as a No. 2 fantasy closer as he heads into his 15th big-league season (second with the Red Sox).

    Mar 21 · Source via Closers Boston Red Sox Kenley Jansen
  • Kenley Jansen, Chris Martin To Pitch Thursday

    Headshot for Kenley Jansen

    Boston Red Sox relievers Kenley Jansen (back) and Chris Martin (groin) are both scheduled to pitch in Thursday night's Grapefruit League game against the Baltimore Orioles. Jansen didn't make his Grapefruit League debut until last Friday due to lat tightness this spring and then was scratched from a spring appearance earlier this week due to lower-back stiffness. While Jansen is running out of time to be ready for Opening Day on March 28 next Thursday, if he can avoid anymore setbacks with his back, he could still be ready. Martin, who is probably next in line for saves in Boston if Jansen ever misses time, will be making his Grapefruit League debut on Thursday after injuring his groin in early March. Jansen is the active MLB leader in saves, but he's become extremely injury-prone.

    Mar 21 · Source via Closers Boston Red Sox Kenley Jansen Chris Martin
  • Red Sox Hoping Kenley Jansen Can Pitch Thursday

    Headshot for Kenley Jansen

    The Boston Red Sox are now hoping that closer Kenley Jansen (back) can pitch in a Grapefruit League game on Thursday. After being scratched from spring training action on both Monday and Tuesday with lower-back tightness, Jansen won't attempt to pitch in a minor-league game on Wednesday. Jansen was dealing with lat tightness earlier in camp and didn't make his Grapefruit League debut until last Friday. Manager Alex Cora said on Monday that the 36-year-old veteran right-hander is running out of time to get ready for Opening Day on March 28, so even if Jansen pitches on Thursday, there's a chance he won't be ready for the start of the regular season. Although Jansen is the active all-time saves leader, this is another reminder that he's become a huge injury risk as a No. 2 fantasy closer. Chris Martin (groin) is also hurt in camp, so Josh Winckowski could be looking at some early season save chances in the back of Boston's bullpen.

    Mar 19 · Source via Closers Boston Red Sox Kenley Jansen
  • Kenley Jansen Not Pitching On Tuesday

    Headshot for Kenley Jansen

    Boston Red Sox right-hander Kenley Jansen (back) will not pitch on Tuesday and is still dealing with back tightness, according to manager Alex Cora. Jansen was scratched on Monday but was originally scheduled to pitch on Tuesday with four more spring outings in mind. He has mad just one spring outing on March 15 and allowed three earned runs on two homers across just 2/3 of an inning. Cora said the veteran is running out of time to be ready for Opening Day. "He's running out of time," the manager said. "We still have time, but we're running out of time." The Red Sox open the regular season on March 28 in Seattle. Jansen posted a 3.63 ERA in the 2023 season, the second-worst mark of his 14-year career while his 27.7% K% was the worst mark of his career.

    Mar 19 · Source via Closers Boston Red Sox Kenley Jansen
  • Kenley Jansen Scheduled To Make Four More Spring Appearances

    Headshot for Kenley Jansen

    Boston Red Sox manager Alex Cora said that closer Kenley Jansen (back) has just enough time to be ready for the start of the regular season on March 28, but there is no margin for any more injury setbacks. "We're running out of time," Cora said. Despite being scratched from his second Grapefruit League appearance on Monday with lower-back tightness, Jansen is scheduled to pitch on Tuesday, Thursday, Sunday and one more time in an exhibition game in Texas next week. The 36-year-old veteran reliever didn't make his first spring appearance until last Friday due to lat tightness, so Jansen has already dealt with two injuries this spring. While he could be ready for Opening Day, fantasy managers should be considering him a pretty shaky No. 2 closer in 2024. Chris Martin (groin) is also hurt and could open the year on the injured list, so the back end of Boston's bullpen is limping into Opening Day.

    Mar 18 · Source via Closers Boston Red Sox Kenley Jansen
  • Kenley Jansen Scratched With Lower-Back Tightness

    Headshot for Kenley Jansen

    Boston Red Sox closer Kenley Jansen (back) has been scratched from the team's Grapefruit League game on Monday versus the Minnesota Twins due to lower-back tightness. However, he could pitch as soon as Tuesday, and the Red Sox still expect that he'll be ready for Opening Day on March 28. Jansen didn't make his spring training debut until last Friday due to lat soreness that he experienced after reporting to camp a month ago, so he hasn't been able to get much work in this spring. Boston is being extra cautious with the 36-year-old veteran reliever. Jansen is MLB's active leader in saves and will be Boston's primary ninth-inning man in 2024, but the injuries are beginning to pile up, and he should be considered a shaky No. 2 fantasy closer.

    Mar 18 · Source via Closers Boston Red Sox Kenley Jansen
  • Kenley Jansen Expected To Make Spring Debut Friday

    Headshot for Kenley Jansen

    Boston Red Sox closer Kenley Jansen's (lat) live batting practice session appeared to go well on Tuesday, as he gave a thumbs up and a "yes, sir" when asked how it went. He is expected to pitch in his first Grapefruit League game on Friday. The Red Sox have been slow-playing Jansen in camp after he reported to spring training with lat soreness. The 36-year-old veteran has progressed nicely, though, and as long as he doesn't have a setback once he starts pitching in actual games, he will be ready for Opening Day later this month. Jansen is MLB's active leader in saves and will be Boston's primary ninth-inning guy when he's healthy, but there's no denying that he's a pretty big injury risk for fantasy managers at this stage of his career.

    Mar 12 · Source via Closers Boston Red Sox Kenley Jansen
  • Kenley Jansen To Throw Live Batting Practice Tuesday

    Headshot for Kenley Jansen

    Boston Red Sox closer Kenley Jansen (lat) is scheduled to throw another live batting practice session on Tuesday, per the Boston Globe's Pete Abraham. The 36-year-old reported right lat soreness early in camp and was shut down, but is now building up for Opening Day. Fantasy managers should monitor his situation for a better idea of whether he will be ready for Opening Day. It seems as though veteran Chris Martin (groin) would get the first shot at save opportunities for the Red Sox if Jansen is unable to start the season healthy.

    Mar 12 · Source via Closers Boston Red Sox Kenley Jansen
  • Kenley Jansen Set For Live Batting Practice Session

    Headshot for Kenley Jansen

    Boston Red Sox closer Kenley Jansen (lat) is scheduled to throw his first live batting practice session of camp on Wednesday, but it could be postponed due to rain. The Red Sox won't take any chances with the field being wet. Jansen reported right-lat soreness early in camp and was shut down, but it's not expected to take the 36-year-old much time to ramp up in spring training, so he's not being ruled out for Opening Day just yet. If he suffers a setback or just isn't ready to go later this month for the start of the regular season, expect Chris Martin to get the first shot at save chances at the back of Boston's bullpen. Jansen is the active leader in saves and had 29 of them with Boston last year, but he's not getting any younger and is a pretty big injury risk as a fantasy relief pitcher in 2024.

    Mar 6 · Source via Closers Boston Red Sox Kenley Jansen
  • Kenley Jansen Throwing Monday

    Headshot for Kenley Jansen

    Boston Red Sox closer Kenley Jansen (lat), who arrived to camp last Wednesday with lat soreness and was shut down for several days, is throwing on Monday against a ploy wall at spring training. While Jansen is a bit behind the other pitchers in camp, as long as he doesn't suffer any setbacks, he should still be ready for Opening Day. The 36-year-old veteran has been the subject of trade rumors this offseason, but his lat injury may cause interested teams to reconsider. As long as he's healthy on Opening Day, Jansen should be Boston's primary closer for 2024. He's the MLB's active leader in saves and had 29 saves in 2023, but his lengthy injury history and age make him a risky target for saves in fantasy drafts this spring.

    Feb 19 · Source via Closers Boston Red Sox Kenley Jansen
  • Kenley Jansen Won't Throw Until Next Week

    Headshot for Kenley Jansen

    Boston Red Sox closer Kenley Jansen (lat) is in good spirits in camp after reporting to spring training with lat soreness, but he won't be back to throwing for a week or so. The Red Sox aren't going to take any chances with Jansen, especially since he's been the subject of trade rumors this offseason. The 36-year-old's injury isn't very serious, but it doesn't look great for an aging reliever as he prepares for the 2024 regular season. If Jansen is traded or isn't ready for Opening Day because of his injury, Chris Martin would be the most likely candidate to see a boost in value as Boston's primary closing option at the back of the bullpen. Jansen had 29 saves in 2023 to become MLB's active leader in saves, but he also dealt with back, knee and hamstring injuries and is a pretty big injury risk at the closing position for fantasy managers.

    Feb 16 · Source via Closers Boston Red Sox Kenley Jansen
  • Kenley Jansen Has General Lat Soreness

    Headshot for Kenley Jansen

    Boston Red Sox general manager Craig Breslow said that closer Kenley Jansen (lat) reported to camp with some "general lat soreness" and will not be throwing for now. However, Jansen did take part in other drills on Monday and had been throwing bullpen sessions at home. This isn't good news for the 36-year-old reliever, especially since the Red Sox have been shopping him in trades, but it appears to be a minor injury that may not end up affecting his availability for the start of the 2024 season. If everything calms down in his lat, Jansen hopes to resume throwing in around a week. If Jansen isn't ready for the start of the regular season or if he's trade during spring training, Chris Martin and Josh Winckowski would become the two primary candidates for closing duties in Boston in 2024.

    Feb 14 · Source via Closers Boston Red Sox Kenley Jansen
  • Red Sox Remain Open To Offers On Jansen, Martin, Schreiber

    Headshot for Kenley Jansen

    Kenley Jansen has been the subject of trade speculation for a large portion of the offseason. With the Red Sox’s payroll seemingly pushing against ownership’s spending limit, there’s sense in looking to move the four-time All-Star closer. Alex Speier of the Boston Globe wrote this evening that the Sox remain in contact with other teams…

    Feb 14 · MLB Trade Rumors Closers Boston Red Sox Kenley Jansen Chris Martin John Schreiber
  • John Schreiber Arrives At Camp Early

    Headshot for Kenley Jansen

    Boston Red Sox right-hander John Schreiber (shoulder) has arrived to the team's spring training facilities in Fort Myers, Fla., early and has been working out since Jan. 11. The 29-year-old reliever says he's "fully healthy" after miss almost two months last season due to a shoulder strain. In his third year with Boston in 2023, Schreiber had a 3.86 ERA (4.52 FIP), a 1.41 WHIP, one save, 25 walks and 53 strikeouts in 46 2/3 innings over 46 appearances (two starts). He'll have a chance to again pitch in high-leverage situations in the back end of Boston's bullpen, especially if the team trades Kenley Jansen before the start of the season, but Schreiber will only be fantasy relevant in deep leagues that reward points for holds. He had a career-high eight saves for the Red Sox in 2022.

    Feb 10 · Source via Closers Boston Red Sox Kenley Jansen John Schreiber
  • Dodgers, Phillies Viewed As Fits For Kenley Jansen

    Headshot for Kenley Jansen

    The Los Angeles Dodgers and Philadelphia Phillies are currently being viewed as potential trade fits for current Red Sox closer Kenley Jansen. The Red Sox are fielding offers for Jansen as he finishes off the two-year, $32 million deal he signed with the club last winter. The right-hander worked to a 3.63 ERA across 51 appearances in his first season with the Red Sox, the second-highest ERA of his 14-year MLB career and well above his 2.52 career mark. He spent the first 12 seasons of his career with the Dodgers before signing with Atlanta for the 2022 season and Boston in 2023. He saw dips in both strikeout and walk rates last season and also saw his ground-ball rate plummet to a career-worst 22.6%. He could viably see save opportunities with either club but could also take on a lesser role entering his age-36 season.

    Feb 8 · Source via Closers Boston Red Sox Los Angeles Dodgers Philadelphia Phillies Kenley Jansen
  • Pitching Stats

    SeasonTeamFPtsGIPWLSVBLSVHLDKBBHHRHBPRERERAWHIP
    2010LAD104.02527.01040041151201220.671.00
    2011LAD182.75153.2215009626303217172.851.04
    2012LAD357.06565.05325009922336318172.350.85
    2013LAD392.77576.243280011118486316161.880.86
    2014LAD459.36865.123440010119555020202.761.13
    2015LAD385.35452.1213600808336214142.410.78
    2016LAD507.77168.232470010411354214141.830.67
    2017LAD504.36568.15041011097445211101.320.75
    2018LAD380.76971.215384082175413228243.010.99
    2019LAD383.06263.05333808016519428263.711.06
    2020LAD150.32724.13111203391923993.331.15
    2021LAD424.06969.04438008636364217172.221.04
    2022ATL452.06564.05241008522458225243.381.05
    2023BOS281.75144.23629405217405221183.631.28
    2024BOS41.776.20041098401222.701.80
    2024 ATC309.05455.23328016621478227243.941.23
    2024 Draft Buddy314.05758.03429016923509228264.031.26
    2024 Steamer351.16464.03332027626559331294.131.27
    2024 THE BAT332.55555.02232026222458327264.001.17
    2024 Zeile326.36058.4333011682350000263.941.23

    Historic stats obtained free of charge from and are copyrighted by Retrosheet. ATC projections by Ariel Cohen. Draft Buddy projections by Mike MacGregor. Steamer projections by Steamer Projections Blog. THE BAT projections by Derek Carty. Zeile Consensus projections by FantasyPros.

    2024

    WeekOppFPtsGIPWLSVBLSVHLDKBBHHRHBPRERERAWHIP
    4vs CLE0.011.00001000300119.003.00
    3vs LAA, vs BAL10.721.20010033101115.402.40
    2at LAA, at OAK21.033.00020044000000.001.33
    1at SEA10.011.00010021000000.001.00

    2023

    WeekOppFPtsGIPWLSVBLSVHLDKBBHHRHBPRERERAWHIP
    25vs NYY-1.010.0000000110021
    24at TB-6.021.001010011103218.002.00
    23at KC, vs HOU2.022.00000020300229.001.50
    22at HOU0.310.10000000000000.000.00
    21at NYY, at WAS19.022.00020030101000.000.50
    20vs DET, vs KC39.044.01030051210112.250.75
    19at SEA9.011.00010010000000.000.00
    18at SF, vs ATL13.032.00120030211114.501.00
    17vs NYM, at OAK9.321.10010011100000.001.50
    16at CHC8.310.10010010000000.000.00
    15vs OAK, vs TEX17.022.00020011000000.000.50
    14at TOR, vs MIA11.322.10010040610227.712.57
    13at CWS, at MIN6.732.20110030200113.380.75
    12vs NYY, vs COL12.022.00010030100000.000.50
    11at NYY, at CLE30.033.01020030200000.000.67
    10vs TB, vs CIN7.033.00110042400226.002.00
    9at ARI, at LAA10.022.00010011000000.000.50
    8at SD8.011.00010002000000.002.00
    7vs STL, at ATL-5.032.002120145106522.504.50
    6at PHI20.022.00020041200000.001.50
    5vs CLE, at BAL8.721.20011010300115.401.80
    4at MIL, vs MIN13.022.00010040000003.001.00
    3vs LAA19.022.00020030100002.451.36
    2at DET18.022.00020021200000.001.40
    1vs BAL13.011.01000021100000.001.50

    2024

    DateOppResultFPtsIPWLSVBLSVHLDKBBHHRHBPRERERAWHIP
    Apr 16vs CLEL 7-100.01.00001000300119.003.00
    Apr 14vs LAAW 5-49.01.00010021101119.002.00
    Apr 11vs BALL 4-91.70.20000012000000.003.00
    Apr 5at LAAW 8-69.01.00010010000000.000.00
    Apr 3at OAKW 1-09.01.00010012000000.002.00
    Apr 2at OAKW 5-43.01.00000022000000.002.00
    Mar 28at SEAW 6-410.01.00010021000000.001.00

    2023

    DateOppResultFPtsIPWLSVBLSVHLDKBBHHRHBPRERERAWHIP
    Sep 12vs NYYL 1-4-1.00.0000000110021
    Sep 5at TBL 6-8-7.00.0010100111032
    Sep 4at TBW 7-31.01.00000000000000.000.00
    Sep 3at KCW 7-30.01.000000103002218.003.00
    Aug 30vs HOUL 4-72.01.00000010000000.000.00
    Aug 23at HOUW 7-50.30.10000000000000.000.00
    Aug 20at NYYW 6-510.01.00010020101000.001.00
    Aug 15at WASW 5-49.01.00010010000000.000.00
    Aug 13vs DETW 6-38.01.00010000100000.001.00
    Aug 10vs KCW 2-010.01.00010020000000.000.00
    Aug 9vs KCW 4-38.01.00010011110119.002.00
    Aug 7vs KCW 6-213.01.01000020000000.000.00
    Aug 1at SEAW 6-49.01.00010010000000.000.00
    Jul 29at SFL 2-3-6.00.0010000011011
    Jul 28at SFW 3-210.01.00010020000000.000.00
    Jul 26vs ATLW 5-39.01.00010010101000.001.00
    Jul 22vs NYMW 8-67.30.10010000100000.003.00
    Jul 19at OAKL 5-62.01.00000011000000.001.00
    Jul 14at CHCW 8-38.30.10010010000000.000.00
    Jul 9vs OAKW 4-39.01.00010011000000.001.00
    Jul 5vs TEXW 4-28.01.00010000000000.000.00
    Jul 1at TORW 7-610.31.10010030300116.752.25
    Jun 29vs MIAL 0-21.01.00000010310119.003.00
    Jun 24at CWSL 4-5-4.30.201000102001113.503.00
    Jun 23at CWSW 3-19.01.00010010000000.000.00
    Jun 21at MINL 4-52.01.00000010000000.000.00
    Jun 18vs NYYW 4-110.01.00010020100000.001.00
    Jun 12vs COLL 3-42.01.00000010000000.000.00
    Jun 11at NYYW 3-212.01.01000010000000.000.00
    Jun 9at NYYW 3-29.01.00010010200000.002.00
    Jun 6at CLEW 5-49.01.00010010000000.000.00
    Jun 3vs TBW 8-511.01.00010030100000.001.00
    Jun 3vs TBL 2-4-5.01.001000113002218.004.00
    Jun 1vs CINW 8-21.01.00000001000000.001.00
    May 27at ARIW 2-19.01.00010010000000.000.00
    May 24at LAAL 3-71.01.00000001000000.001.00
    May 20at SDW 4-28.01.00010002000000.002.00
    May 13vs STLL 3-4-6.01.001010031003218.004.00
    May 12vs STLL 6-8-8.00.0010100131033
    May 10at ATLW 5-29.01.00010010100000.001.00
    May 6at PHIW 7-49.01.00010010100000.001.00
    May 5at PHIW 5-311.01.00010031100000.002.00
    Apr 29vs CLEW 8-71.01.00001010300119.003.00
    Apr 25at BALW 8-67.70.20010000000000.000.00
    Apr 21at MILW 5-310.01.00010020000000.000.00
    Apr 18vs MINW 5-43.01.00000020000000.000.00
    Apr 15vs LAAW 9-78.01.00010000000000.000.00
    Apr 14vs LAAW 5-311.01.00010030100000.001.00
    Apr 9at DETW 4-110.01.00010021200000.003.00
    Apr 6at DETW 6-38.01.00010000000000.000.00
    Apr 1vs BALW 9-813.01.01000021100000.002.00
    To top