2025 Stats
W-L
3-2
ERA
1.50
WHIP
0.83
K
42
SV
13
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

Fans side for save
Chapman earned a save against the Mariners on Monday, striking out all three batters he faced in one inning of work.
ANALYSIS
Chapman had little trouble protecting a two-run lead in the ninth frame, as he fired 10 of 13 pitches for strikes and punched out Randy Arozarena, Dylan Moore and Donovan Solano in order. The veteran lefty has a 10-game streak of outings in which he hasn't given up an earned run, and during that stretch he's posted a dominant 14:1 K:BB while allowing just two hits over nine innings. Chapman has successfully converted 13 or 14 save chances on the campaign, and his 42:9 K:BB, 1.50 ERA and 0.83 WHIP through 30 frames make him one of the league's most reliable closers this season.
Chapman had little trouble protecting a two-run lead in the ninth frame, as he fired 10 of 13 pitches for strikes and punched out Randy Arozarena, Dylan Moore and Donovan Solano in order. The veteran lefty has a 10-game streak of outings in which he hasn't given up an earned run, and during that stretch he's posted a dominant 14:1 K:BB while allowing just two hits over nine innings. Chapman has successfully converted 13 or 14 save chances on the campaign, and his 42:9 K:BB, 1.50 ERA and 0.83 WHIP through 30 frames make him one of the league's most reliable closers this season.
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
13
Last 10 Games
12
Last 5 Games
11
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
-1%
BAA vs RHP
BAA | K | BB | H | HR | ||||
---|---|---|---|---|---|---|---|---|
Since 2023vs Left | .208 | 52 | 24 | 25 | 2 | |||
Since 2023vs Right | .172 | 191 | 60 | 72 | 9 | |||
2025vs Left | .154 | 14 | 0 | 4 | 1 | |||
2025vs Right | .152 | 28 | 9 | 12 | 1 | |||
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
-27%
ERA at Home
ERA | WHIP | IP | K/9 | BB/9 | |||||
---|---|---|---|---|---|---|---|---|---|
Since 2023Home | 3.44 | 1.35 | 81.0 | 14.9 | 4.8 | ||||
Since 2023Away | 2.61 | 1.04 | 69.0 | 14.2 | 5.3 | ||||
2025Home | 1.26 | 0.84 | 14.1 | 11.9 | 2.5 | ||||
2025Away | 1.72 | 0.83 | 15.2 | 13.2 | 2.9 | ||||
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
4.33K/9
12.1BB/9
2.8HR/9
0.6Fastball
99.2 mphERA
1.55WHIP
0.86BABIP
.247GB/FB
0.88Left On Base
85.6%Exit Velocity
82.0 mphBarrels/BBE
5.1%Spin Rate
2295 rpmBalls Hit 95+ MPH
21.2%Swinging Strike
19.9%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

Another elite prospect gets the call in the American League as the Boston Red Sox start the clock on Roman Anthony, but there are other values to be found on the waiver wire if you miss out.

Explore the evolving roles in American League bullpens and discover key fantasy baseball insights to boost your standings with timely roster additions.

Get the edge on MLB betting with expert picks for May 21st. Adam Warner lays out his best bets for Mets vs Red Sox with Garrett Crochet on the bump for Boston.

Which closers have most improved their ranking so far this season, and which have tumbled down the list?
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

Continues strong run as closer
Chapman collected the save in Wednesday's 4-3 win over the Rays after throwing a clean ninth inning. He struck out two.
ANALYSIS
Subscribe now to instantly reveal our take on this news.
Subscribe now to instantly reveal our take on this news.

Closes door on Yankees
Chapman picked up the save Sunday against the Yankees, striking out the only batter he faced over one-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.

Posts 10th save
Chapman earned a save against the Yankees on Saturday, striking out one batter in a perfect inning.
ANALYSIS
Subscribe now to instantly reveal our take on this news.
Subscribe now to instantly reveal our take on this news.

Picks up ninth save
Chapman earned the save in Sunday's 3-1 win over Atlanta, logging a strikeout and a walk in a scoreless ninth inning.
ANALYSIS
Subscribe now to instantly reveal our take on this news.
Subscribe now to instantly reveal our take on this news.

Charged with blown save
Chapman was charged with a blown save in Tuesday's loss to the Brewers after allowing a run on two hits and a walk over an inning of work. 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.
Latest Fantasy Rumors

Option for Philly?
Chapman could be a trade target for the Phillies ahead of the deadline, Jim Bowden of The Athletic speculates.
ANALYSIS
The Phillies' most significant need ahead of the trade deadline is bolstering the back end of their bullpen, and adding a player like Chapman, one of the most experienced and playoff-tested relievers potentially available via trade, would undoubtedly fix those woes. Chapman owns an impressive 1.55 ERA across 32 appearances this season while going 12-for-13 in save opportunities.
The Phillies' most significant need ahead of the trade deadline is bolstering the back end of their bullpen, and adding a player like Chapman, one of the most experienced and playoff-tested relievers potentially available via trade, would undoubtedly fix those woes. Chapman owns an impressive 1.55 ERA across 32 appearances this season while going 12-for-13 in save opportunities.