Fan-Favorite Slugger Announces Retirement After Emotional Comeback
The 34-year-old announced his retirement Tuesday in an Instagram post.
"Thank you, baseball," Mancini wrote, singling out the Baltimore fan base that embraced him for the bulk of his career. "To every fan, especially those in Birdland, your support over the years has meant the world to me. There is nothing more special in sports than a connection between a team and their fans, and I was lucky enough to feel that everywhere I played."
Career Nearly Ended By Cancer
Mancini's story became one of the sport's most inspiring in 2020, when he was diagnosed with colon cancer and missed the entire season undergoing surgery and chemotherapy.
He returned in 2021 to win the American League Comeback Player of the Year award, and the following year he was traded from Baltimore to Houston, where he helped the Astros win the World Series.
Trey Mancini makes his retirement from baseball official with an Instagram post.
— Jake Rill (@JakeDRill) August 18, 2026
Mancini played 701 of his 836 career MLB games for the Orioles. He beat colon cancer. And he had another return to the big leagues with the Angels earlier this year. pic.twitter.com/2UxBtODDtE
That championship capped a run in which he became one of the most beloved players in Orioles history, spending six seasons in Baltimore from 2016 to 2022 and appearing in 701 of his 836 career major league games with the organization.
He finished third in AL Rookie of the Year voting in 2017 after batting .293 with 24 home runs, a race complicated only by the fact he was competing against a fellow rookie named Aaron Judge.
The Final Comeback
Mancini's path back to the majors this year was its own small triumph. He signed a minor league deal with the Los Angeles Angels in February, in part due to his friendship with first-year Angels hitting coach Brady Anderson, a former Orioles outfielder who worked in Baltimore's front office during Mancini's early years there.
After hitting .273 with six home runs at Triple-A Salt Lake, Mancini earned a call-up and made his first major league appearance since 2023 on June 8, going 3-for-4 with an RBI against the Astros.
He hit .308 across a five-game stretch before being designated for assignment on June 17, ending his season.
Trey Mancini has announced that he is retiring from Major League Baseball.
— MLB Deadline News (@MLBDeadlineNews) August 18, 2026
Mancini, 34, won the AL Comeback Player of the Year award in 2021 after battling colon cancer and won the World Series with HOU in 2022.
Congrats on a great career, Trey! pic.twitter.com/6F6H2ZOGcQ
"I think I knew over the last few years that I could still make it back up, and that was the main goal," Mancini told Kubatko.
Mancini finishes his career a lifetime .263 hitter with a .775 OPS, 129 home runs, 404 RBI, and 156 doubles across parts of eight major league seasons with the Orioles, Astros, Cubs, and Angels.
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