Cuban career Chapman joined the
Holguín Sabuesos of the
Cuban National Series League for the 2005–06 season and played through the 2008–09 season. In 327 career innings, Chapman compiled a 24–19
win–loss record, a 3.74
earned run average (ERA), and 365
strikeouts. For the 2008–09 season, he compiled a 11–4 record with a 4.03 ERA, 130 strikeouts, and 118 innings pitched. He was used mainly as a starting pitcher during his time with the Sabuesos, although he made 11 relief appearances in the 2007 season, where he compiled seven saves.
Defection and American career After a failed attempt to
defect in the spring of 2008, Chapman reported to
Havana to meet with Cuban president
Raúl Castro who gave him a conditional reprieve, suspending him for the remainder of the
National Series season and also keeping him off Cuba's national team for the
2008 Summer Olympics but allowing him to return to the National Series and play in the WBC in 2009. Chapman successfully defected from Cuba while in
Rotterdam,
Netherlands, where the Cuban national team was participating in the
World Port Tournament on July 1, 2009; Chapman walked out the front door of the team hotel and entered into an automobile driven by an acquaintance.
Gerardo Concepción defected from the Cuban national team in the same tournament. Chapman eventually established residency in
Andorra and petitioned MLB to be granted
free agent status.
Minor leagues spring training On January 10, 2010, Chapman signed a six-year contract with the
Cincinnati Reds worth $30.25 million. The
Associated Press reported that the
signing bonus totals $10.25 million, paid annually over 11 years, with an additional bonus if he became eligible for salary arbitration in 2012 or 2013. Chapman began the 2010 season assigned to the
Triple-A Louisville Bats, and made his professional debut with the Louisville Bats on Sunday, April 11, in Toledo against the
Mud Hens, where he pitched innings, giving up one unearned run, while striking out nine. Chapman made 13 starts with Louisville, pitching to a 4.11 ERA, and pitched to a 2.40 ERA after the team used him as a
relief pitcher. He recorded his first Major League win on September 1 after pitching an inning of relief against the Brewers. Chapman threw the fastest pitch recognized by MLB on September 24, 2010, at
Petco Park in San Diego, California. It was clocked at 105.1 mph to
Tony Gwynn Jr. in the eighth inning. In Game 2 of the
2010 NLDS against the
Philadelphia Phillies, Chapman allowed three unearned runs due to miscues of the outfielders. He got his first career postseason loss and the Reds lost the division series to the Phillies in a three-game sweep.
2011 season Chapman served solely as a relief pitcher in 2011, appearing in 54 regular season games and finishing the season with a 3.60 ERA. He also struck out 71 batters in just 50 innings of work that season.
2012 season Chapman was due to be introduced as a starter for the 2012 season, but preseason injuries to closer
Ryan Madson and middle relievers
Bill Bray and
Nick Masset led manager
Dusty Baker to put Chapman in the
setup role. Interim closer
Sean Marshall struggled early in the season, and Chapman was given the closer role in late May. On July 1, 2012, Chapman was named to his first
All-Star Game. Chapman won the
MLB Delivery Man of the Month Award for July 2012, in which he recorded 13 saves while not allowing a run in innings while striking out 31 batters—more than 60% of the batters he faced. It was the third month of the season in which he did not allow a single run. He was named the August Delivery Man of the Month. Chapman finished the 2012 season with a 1.51 ERA and 38 saves in 43 chances, recording 122 strikeouts and 23 walks in innings.
2013 season In March 2013, it was announced that Chapman would be the
closer for the Cincinnati Reds. He was an All-Star selection for the second season in a row. He finished the 2013 year with 38 saves, a 4–5 record, 112 strikeouts, and a 2.54 ERA.
2014 season During a spring training game against the
Kansas City Royals on March 19, 2014, Chapman was struck in the head by a line drive from
Salvador Pérez. The spring-training game between the Reds and the Royals was ended at that point with Kansas City leading 8–3. Chapman underwent surgery to fix a skull fracture above his left eye. A metal plate was inserted into his head to stabilize the fracture. Chapman began the 2014 season on the 15-day disabled list. He was activated from the disabled list on May 10. Chapman recorded his 100th save against the
Arizona Diamondbacks on July 29, 2014, becoming the eighth-fastest pitcher to reach the milestone. In the 20-pitch appearance, Chapman threw 15 fastballs, all of which were above 100 mph. On September 23, 2014, Chapman recorded his 100th strikeout in his 51st inning pitched of the season, making him the fastest pitcher ever to reach that milestone. In 54 appearances, Chapman produced 106 strikeouts with 36 saves going 0–3 with an ERA of 2.00.
2015 season Chapman and the Reds agreed to a one-year, $8.05 million contract on February 13, 2015. Chapman was selected to the
2015 MLB All-Star Game. He pitched a scoreless ninth inning and struck out the side on 14 pitches, 12 of which were recorded at 100 mph or greater. His fastest pitch in 2015 was 103.9 mph, best in MLB. His four-seam fastball had the highest average speed of any MLB pitcher's pitches in 2015, at 100.0 mph. On January 11, 2016, manager
Joe Girardi named Chapman the team's new closer. He avoided arbitration on February 12, 2016, by agreeing to a one-year contract worth $11.325 million. MLB suspended Chapman for the first 30 games of the season due to an off-season personal conduct policy violation related to domestic violence. He made his first appearance for the Yankees on May 9, 2016, striking out two and allowing a run as the Yankees won 6–3 over the
Kansas City Royals. On July 18 against the Orioles, Chapman threw for twice in the top of the ninth inning, averaging with his fastball. The triumvirate of Betances, Chapman, and Miller became known by fans as "No
Runs–D.M.C.", owing to the relievers' dominance of opposing hitters.
Chicago Cubs (2016) in Game 7 of the
2016 World Series On July 25, 2016, the Yankees traded Chapman to the
Chicago Cubs for
Gleyber Torres,
Billy McKinney,
Adam Warren, and Rashad Crawford. In an interview with ESPN, Chapman stated he was thrilled that the Cubs went after him, especially considering the recent success of
Héctor Rondón. Chapman made his first appearance as a member of the Cubs on July 27, pitching a 1–2–3 ninth and striking out two batters in a non-save situation. His fastest pitch in 2016 was 105.1 miles an hour, best in MLB. He pitched the final innings of Game 6 to secure the Cubs' first pennant since 1945. Chapman's workload in the
2016 World Series escalated with the Cubs facing elimination at the hands of the
Cleveland Indians. Down 3–1 in the series, Chapman pitched through the seventh, eighth, and ninth innings of Game 5, allowing only one hit and preserving the Cubs' 3–2 lead. He was called upon again in the seventh and eighth innings of Game 6, where he allowed one hit and one run en route to a 9–3 victory. Chapman appeared the next day to close out Game 7 with a 6–3 lead in the bottom of the eighth inning, but blew the save opportunity, allowing Cleveland to tie the game on a two-run homer by
Rajai Davis. Chapman pitched through the bottom of the ninth to send the game into extra innings. The Cubs tallied the game-winning run in the 10th inning, making Chapman the winning pitcher and giving him his first World Series title.
Second stint with New York Yankees (2017–2022) On December 15, 2016, Chapman signed a five-year, $86 million contract to return to the
Yankees. This was the largest contract given to a relief pitcher until it was surpassed by
Edwin Díaz in 2022.
2017 season On May 14, 2017, Chapman was placed on the 10-day disabled list due to rotator cuff inflammation in his left shoulder. Although MRIs revealed no structure damage, Chapman was ruled out for at least two weeks. On June 18, the Yankees activated Chapman from the DL and he pitched that afternoon against the Oakland A's. On August 13, Chapman gave up a home run to
Rafael Devers of the Boston Red Sox. The pitch was clocked at 103 mph, making it the fastest pitch hit for a home run in the Statcast era (breaking
Kurt Suzuki's home run off of a Chapman 102 mph pitch the previous year). It was also Chapman's first home run given up to a left-handed batter since
Luke Scott of the
Baltimore Orioles did so in 2011. Later that month, Chapman gave up only his third home run off a left-hander when
Yonder Alonso of the
Seattle Mariners hit one of his 101 mph fastballs out. His fastest pitch of 2017 was 104.3 miles an hour, best in MLB. His fastest pitch of 2018 was 104.4 miles an hour, second-best in MLB only to pitches by
Jordan Hicks.
2019 season In 2019, he was 3–2 with 37 saves and a 2.21 ERA, as in 60 relief appearances he struck out 85 batters in 57.0 innings (13.4 per nine innings). He received the
AL Reliever of the Month Award for both May and August. He received the
Mariano Rivera American League Reliever of the Year Award at the end of the season. Chapman logged one save in the
American League Division Series and one in the
American League Championship Series but gave up a walk-off home run to
Jose Altuve with two outs in the ninth inning of Game 6 of the ALCS, eliminating the Yankees from the playoffs.
2020 season On July 11, 2020, during the
COVID-19 pandemic, it was reported that Chapman had tested positive for the virus. Manager
Aaron Boone announced that he was cleared to return to the team on July 31. Chapman pitched in his first major league game of 2020 on August 17. On September 2, Chapman received a three-game suspension for throwing a pitch at the head of
Tampa Bay Rays batter
Mike Brosseau. Brosseau later hit a game-winning home run off Chapman in Game 5 of the ALDS, effectively ending the Yankees season. His 100.5 mph-average sinker was the fastest sinker of any major league pitcher for the 2020 season. During the regular season, Chapman recorded a 3.09 ERA and 22 strikeouts in innings.
2021 season On August 26, 2021, Chapman recorded his 300th career save, closing out a 7–6 victory against the
Oakland Athletics. On September 30, Chapman recorded his 1,000th strikeout during a game against the
Toronto Blue Jays. He struck out
George Springer in the bottom of the ninth inning, eventually winning the game 6–2. Chapman finished the 2021 season with 30 saves and a 3.36 ERA. He recorded 97 strikeouts and 38 walks in innings.
2022 season Chapman went on the injured list in May 2022 due to
achilles tendinitis and lost the closer role to
Clay Holmes. He went on the injured list again in August due to an infection that developed when he got a tattoo. Chapman missed a mandatory workout before the
2022 American League Division Series and was left off the team's postseason roster.
Kansas City Royals (2023) On January 27, 2023, Chapman signed a one-year contract with the
Kansas City Royals. He went 4–2 with 2.45 ERA in 31 appearances with the Royals in 2023.
Texas Rangers (2023) On June 30, 2023, the Royals traded Chapman to the
Texas Rangers in exchange for
Cole Ragans and Roni Cabrera. He went 2–3 with 4 saves and a 3.72 ERA in 30 regular season appearances, and went on to pitch six innings with a 2.75 ERA across the
2023 postseason, ultimately winning his second
World Series ring.
Pittsburgh Pirates (2024) On January 31, 2024, Chapman signed a one-year, $10.5 million contract with the
Pittsburgh Pirates. On June 29, 2024, Chapman recorded his 1,197th career strikeout to pass
Billy Wagner for the most strikeouts by a left-handed reliever.
Boston Red Sox (2025–present) 2025 season On December 10, 2024, Chapman signed a one-year, $10.75 million contract with the
Boston Red Sox. Chapman came into spring training in a battle with
Liam Hendriks and
Justin Slaten for the Red Sox closer role. After spring training, Red Sox manager
Alex Cora announced Chapman as the closer to start the season. Chapman started off strong, getting the win in his Red Sox debut on
Opening Day, and consistently getting saves. On April 19, 2025, Chapman threw the fastest pitch recorded for a Red Sox pitcher with 102.3 miles per hour, only to break his own record seven days later, throwing a pitch recorded at 103.4 mph. The Red Sox were the sixth team in which Chapman broke the franchise's record for fastest pitch. On July 2, he earned the 350th save of his career against the Cincinnati Reds in Game 1 of a doubleheader. Four days later, on July 6, Chapman was named to his eighth
All-Star Game, and his first since 2021. On August 31, 2025, Chapman and the Red Sox agreed to a contract extension for the
2026 season worth $13.3 million, including a vesting option for the 2027 season. Between July 27 to September 10, Chapman held a historic hitless streak. During that time, in 17 appearances, he struck out 21 batters and only walked four, giving up no hits or runs. The 17 appearances without giving up a hit was the third-longest such streak in the MLB since 1901, trailing only the Marlins'
Randy Choate in 2011 (20 appearances), and the New York Mets'
Tim Byrdak (18 appearance in 2018). Both Chapman's hitless and scoreless streak ended after he got walked off by the
Athletics on September 10. Chapman finished the regular season with a 5–3 record, 32 saves, and 1.17 ERA, which was the best of his career. His 32 saves were also the most since the 2019 season. He also only surrendered eight earned runs in 67 total appearances, which was the lowest total of a full season in his career. His outstanding year helped the Red Sox to their first playoff appearance since 2021, where they faced his former team, the
New York Yankees in the
Wild Card Series. In Game 1 of the series, Chapman came into the ninth inning with a 3–1 lead, and subsequently loaded the bases on the first three batters, giving the Yankees a prime opportunity at a comeback. However, Chapman rebounded by then getting three straight outs, and earned his first postseason save since 2020. Unfortunately, the Red Sox lost the next two games, ending their and Chapman's season. In mid-November, Chapman was named the
AL Reliever of the Year for the second time, his first win having come in 2019 as a member of the Yankees. == International career ==