2025 Stats
W-L
2-1
ERA
1.93
WHIP
1.18
K
14
SV
4
Rest-of-Season Projections
2025 Fantasy Outlook
Control continues to be a major issue for Chapman, who issued 39 free passes over 61.2 innings with the Pirates in 2024. His 14.7 percent walk rate was the worst among qualified relievers, but he still posted an impressive 22.3 K-BB percentage that was a top-25 mark. The veteran southpaw averaged 99.8 miles per hour on his sinker, inducing a 32 percent whiff rate that is consistently near the top of the leaderboard for that pitch type. He struck out 98 batters and racked up 14 saves, proving he can still get the job done in the ninth inning. Chapman, who will turn 37 years old in February, signed a one-year, $10.75 million deal with Boston. He'll be a candidate to close for the Red Sox alongside Liam Hendriks and Justin Slaten. Read Past Outlooks

Registers one-out save
Champan earned the save in Tuesday's 7-4 win over the Rays, striking out the only batter he faced.
ANALYSIS
Zack Kelly came in for the seventh inning of Tuesday's game, and after pitching two scoreless frames he was brought back out for the ninth. He proceeded to yield two runs to reduce the Red Sox's lead to three, which prompted Boston manager Alex Cora to bring in Chapman to record the final out. Chapman needed five pitches to record his fourth save of the season, tossing a 99 mph fastball past Curtis Mead for the punchout. Chapman has a 1.23 ERA, 1.23 WHIP and 12:4 K:BB across 7.1 innings to start his Red Sox tenure.
Zack Kelly came in for the seventh inning of Tuesday's game, and after pitching two scoreless frames he was brought back out for the ninth. He proceeded to yield two runs to reduce the Red Sox's lead to three, which prompted Boston manager Alex Cora to bring in Chapman to record the final out. Chapman needed five pitches to record his fourth save of the season, tossing a 99 mph fastball past Curtis Mead for the punchout. Chapman has a 1.23 ERA, 1.23 WHIP and 12:4 K:BB across 7.1 innings to start his Red Sox tenure.
Pitching Stats
Loading Pitching Stats...
2025
2024
2023
2022
2021
2020
2019
2018
2017
Minor League Game Log

Calculate Stats Over Time
Just click on any two dates.
Loading Minor League Pitching Game Log...
Pitching Appearances Breakdown
Average Pitch Count
14
Last 10 Games
14
Last 5 Games
13
How many pitches does Aroldis Chapman generally throw?
1-10
11-20
21-30
31-40
41-50
51-60
61-70
71-80
81-90
91-100
101-110
111-120
121+
What part of the game does Aroldis Chapman generally pitch?
1st
2nd
3rd
4th
5th
6th
7th
8th
9th
Extra
% Games Reaching Innings Threshold
% Games By Number of Innings Pitched
Left/Right Pitching Splits
Since 2023
-17%
BAA vs RHP
2025
-33%
BAA vs LHP
BAA | K | BB | H | HR | ||||
---|---|---|---|---|---|---|---|---|
Since 2023vs Left | .218 | 42 | 24 | 22 | 2 | |||
Since 2023vs Right | .180 | 173 | 55 | 66 | 8 | |||
2025vs Left | .143 | 4 | 0 | 1 | 1 | |||
2025vs Right | .214 | 10 | 4 | 6 | 0 | |||
2024vs Left | .211 | 21 | 14 | 12 | 1 | |||
2024vs Right | .194 | 77 | 25 | 32 | 4 | |||
2023vs Left | .243 | 17 | 10 | 9 | 0 | |||
2023vs Right | .161 | 86 | 26 | 28 | 4 | |||
More Splits→ | View More Split Stats |
Home/Away Pitching Splits
Since 2023
-24%
ERA on Road
2025
-35%
ERA at Home
ERA | WHIP | IP | K/9 | BB/9 | |||||
---|---|---|---|---|---|---|---|---|---|
Since 2023Home | 3.73 | 1.42 | 72.1 | 15.3 | 5.1 | ||||
Since 2023Away | 2.84 | 1.12 | 57.0 | 14.5 | 6.0 | ||||
2025Home | 1.59 | 1.06 | 5.2 | 12.7 | 3.2 | ||||
2025Away | 2.45 | 1.36 | 3.2 | 14.7 | 4.9 | ||||
2024Home | 5.50 | 1.75 | 34.1 | 16.0 | 6.6 | ||||
2024Away | 1.65 | 0.84 | 27.1 | 12.2 | 4.6 | ||||
2023Home | 2.23 | 1.14 | 32.1 | 15.0 | 3.9 | ||||
2023Away | 4.15 | 1.38 | 26.0 | 17.0 | 7.6 | ||||
More Splits→ | View More Split Stats |
Stat Review
How does Aroldis Chapman compare to other relievers?
This section compares his stats with all relief pitcher seasons from the previous three seasons (minimum 30 innings)*. The bar represents the player's percentile rank. For example, if the bar is halfway across, then the player falls into the 50th percentile for that stat and it would be considered average.
* Exit Velocity, Barrels/BBE %, Balls Hit 95+ MPH %, and Spin Rate are benchmarked against 2019 data (min 30 IP). See here for more exit velocity/barrels stats plus an explanation of current limitations with that data set.
* Exit Velocity, Barrels/BBE %, Balls Hit 95+ MPH %, and Spin Rate are benchmarked against 2019 data (min 30 IP). See here for more exit velocity/barrels stats plus an explanation of current limitations with that data set.
K/BB
3.50K/9
13.5BB/9
3.9HR/9
1.0Fastball
98.9 mphERA
1.93WHIP
1.18BABIP
.328GB/FB
0.88Left On Base
93.8%Exit Velocity
81.6 mphBarrels/BBE
6.5%Spin Rate
2308 rpmBalls Hit 95+ MPH
19.6%Swinging Strike
20.7%Advanced Pitching Stats
Loading Advanced Pitching Stats...
Defensive Stats
Loading MLB Defensive Stats...
Stats Vs Today's Lineup
Want more matchup stats?
Loading Matchup Stats...
Our full team depth charts are reserved for RotoWire subscribers.
Subscribe Now
Recent RotoWire Articles Featuring Aroldis Chapman See More

A wave of top prospects joins the American League free-agent pool this week, including the Minnesota Twins' Luke Keaschall.

Relievers like Luke Jackson of the Rangers are making a strong early impression, but will he be able to keep the closer job all year?

The American League waiver wire is heating up as potential breakout players like Kyren Paris continue to make noise.

Brad Johnson dives deep into some bullpens in flux, including in Detroit where injured closer Alex Lange needs to work on finding the strike zone once he's back on the mound.
Past Fantasy Outlooks
2024
2023
2022
2021
2020
2019
2018
2017
2016
2015
2014
2013
2012
2011
2010
Chapman finished with 100-plus strikeouts for the fifth time in his career, but for the first time since 2015. The veteran showcased increased velocity early in the season, hitting 103.8 mph on the radar gun with his devastating sinker (101.1 mph average) that yielded a 43.3% whiff rate, the league's highest mark for that pitch type. Walks were still an issue, but Chapman still had the third-highest K-BB percentage among qualified relievers at 26.9%. Ultimately, the southpaw proved he was effective enough during his age-35 season to maintain a high-leverage role for both Kansas City and Texas. Chapman only had six saves last year, and it seems unlikely that he will take away closing duties from David Bednar after signing a one-year deal with the Pirates in January. The Cuban Missile can still be an asset in leagues scoring holds, NL-only formats and even deep mixed leagues for his ratios and strikeouts.
More Fantasy News

Slams door for save
Chapman allowed a hit in a scoreless inning during Sunday's win over the White Sox. He earned a save and struck out two.
ANALYSIS
Subscribe now to instantly reveal our take on this news.
Subscribe now to instantly reveal our take on this news.

Experiences first hiccup
Chapman (2-1) was tagged for his first loss Saturday as the Red Sox fell 3-2 to the White Sox. He allowed a run on a walk and a single while striking out one over a third of an inning.
ANALYSIS
Subscribe now to instantly reveal our take on this news.
Subscribe now to instantly reveal our take on this news.

Nabs second save
Chapman recorded the final two outs to secure the save in Friday's 13-9 win over the Cardinals, issuing one walk without allowing a run.
ANALYSIS
Subscribe now to instantly reveal our take on this news.
Subscribe now to instantly reveal our take on this news.

Notches first save of 2025
Chapman picked up the save after throwing a scoreless ninth inning with one walk in Wednesday's 3-0 win over Baltimore. He struck out one.
ANALYSIS
Subscribe now to instantly reveal our take on this news.
Subscribe now to instantly reveal our take on this news.

Works eighth inning Thursday
Chapman (1-0) allowed one hit and struck out one over a scoreless inning to pick up the win over Texas on Thursday.
ANALYSIS
Subscribe now to instantly reveal our take on this news.
Subscribe now to instantly reveal our take on this news.
Latest Fantasy Rumors

Close to deal with Boston
The Red Sox have made progress in contract talks with Chapman and are close to signing him, Chris Cotillo of MassLive.com reports.
ANALYSIS
There's no word yet on the potential terms of the contract. Chapman will turn 37 in February but is still one of the hardest throwers in the game and struck out 98 over 61.2 innings with the Pirates in 2024. He would be a candidate to step in as the closer in Boston, taking over for free agent Kenley Jansen.
There's no word yet on the potential terms of the contract. Chapman will turn 37 in February but is still one of the hardest throwers in the game and struck out 98 over 61.2 innings with the Pirates in 2024. He would be a candidate to step in as the closer in Boston, taking over for free agent Kenley Jansen.