Joe Mantiply Bio
Joseph Newman Mantiply is an American professional baseball pitcher. Born on March 1, 1991, he has pitched in Major League Baseball (MLB) for the Detroit Tigers, New York Yankees, Arizona Diamondbacks, and Toronto Blue Jays. A left-handed reliever, Mantiply was an All-Star in 2022 during his standout campaign with the Diamondbacks.
Early Life and Background
Joseph Newman Mantiply grew up in the Dry Fork area of Virginia and attended Tunstall High School. As a young pitcher, he drew early professional interest when the New York Mets selected him in the 48th round of the 2009 MLB draft, though he chose not to sign. Mantiply instead pursued a college career at Virginia Tech, where he pitched for the Virginia Tech Hokies and developed into a polished left-handed arm.
During his summers at Virginia Tech, Mantiply sharpened his craft in elite collegiate leagues. In 2010, he played with the Bethesda Big Train of the Cal Ripken Collegiate Baseball League. The following summer, he joined the Harwich Mariners of the Cape Cod Baseball League, one of the most respected amateur circuits in the country. After his junior year, the Philadelphia Phillies picked him in the 28th round of the 2012 MLB draft, and again he returned to Virginia Tech for his senior season.
Path to Baseball
Mantiply entered professional baseball after his senior year when the Detroit Tigers selected him in the 27th round, 816th overall, of the 2013 MLB draft. He launched his pro career that summer with the Connecticut Tigers and was initially used as a starting pitcher. In 2014, the organization transitioned him to a relief role, beginning with the West Michigan Whitecaps before promoting him to the Double-A Erie SeaWolves. The shift to the bullpen helped Mantiply refine his craft and accelerate his path toward the major leagues.
Joe Mantiply Career
Early Career (2013–2018)
Mantiply made his major league debut on September 3, 2016, becoming one of the Tigers’ late-season call-ups. After the season, the New York Yankees claimed him off waivers on November 8, 2016, and he spent 2017 at Triple-A Scranton/Wilkes-Barre, where he posted a 6–5 record and 2.83 ERA across 35 appearances. In November 2017, Mantiply signed a minor league deal with the Cincinnati Reds, but he underwent Tommy John surgery on March 9, 2018, and missed the entire year. He returned in 2019 with Triple-A Louisville, then rejoined the Yankees in August and earned his first major league win after relieving Chad Green for three innings against the Baltimore Orioles on August 12.
Arizona Diamondbacks Breakthrough (2020–2022)
Mantiply signed a minor league contract with the Arizona Diamondbacks in January 2020 and was selected to the active roster on September 1, making four late-season relief appearances. After a brief designation, he returned to the organization on a new minor league deal and was brought back to the majors on May 15, 2021. In 57 relief appearances that year, he posted a 3.40 ERA with 38 strikeouts in 39 2/3 innings, establishing himself as a dependable left-handed option out of the Diamondbacks bullpen.
The 2022 season marked the high point of Mantiply’s career. He was named to the National League All-Star team as a reliever, his first selection, and appeared in 69 games for Arizona. Across 60 innings, he recorded a 2–5 record, 2.85 ERA, 61 strikeouts, and two saves, cementing his reputation as one of the National League’s most trusted situational lefties.
Later Diamondbacks Years and Toronto Blue Jays Era (2023–Present)
In 2023, Mantiply made 35 appearances, including three starts, going 2–2 with a 4.62 ERA. He returned to a full relief workload in 2024, appearing in 75 games and posting a 6–2 record with a 3.92 ERA, 53 strikeouts, and one save across 59 2/3 innings. A difficult 2025 began with a 15.83 ERA in 10 appearances before the Diamondbacks designated him for assignment on May 30 and released him on June 1.
Mantiply signed a minor league deal with the Toronto Blue Jays on July 13, 2025, and pitched for the Triple-A Buffalo Bisons. He re-signed with Toronto on March 3, 2026, had his contract selected on April 5, and returned to the Blue Jays’ active roster before undergoing announced arthroscopic surgery on his left knee in late May.
Driving Style and Strengths
Mantiply has built his career on consistency out of the bullpen, particularly against left-handed hitters, using a disciplined approach and a deep arsenal that keeps batters off balance in short stints. His experience as a starter early in his career gives him the durability to handle multi-inning appearances, while his post-Tommy John track record demonstrates resilience and command.
Notable Events and Milestones
Mantiply’s signature moment came in 2022, when he earned his first career All-Star selection as a member of the National League. He also recorded his first major league win with the Yankees in August 2019 and has tallied more than 210 career strikeouts at the MLB level.
Joe Mantiply Career Wins
Across his MLB career, Mantiply has compiled a verified 12–13 win–loss record with a 4.35 ERA and 210 strikeouts. His victories span the Yankees and Diamondbacks organizations, with the bulk of his run-prevention success coming during his All-Star 2022 season and his strong 2024 campaign.
MLB Highlights
Mantiply’s most memorable win came on August 12, 2019, when he relieved Chad Green for three innings against the Baltimore Orioles to earn his first major league victory. He added six wins during the 2024 season while appearing in 75 games, the highest single-season win total of his major league tenure.
Other Wins and Performances
In the minors, Mantiply posted a 6–5 record with Scranton/Wilkes-Barre in 2017 and a 3.72 ERA with the Louisville Bats in 2019 before his return to the Yankees. He also earned a win at Double-A Chattanooga during that 2019 stretch, reinforcing his value as a dependable depth arm.
| Series | Wins | Top Tens | Poles |
|---|---|---|---|
| MLB (career through May 17, 2026) | 12 | N/A | N/A |
Joe Mantiply Family
Family Background and Baseball Lineage
Joseph Newman Mantiply was raised in the Dry Fork, Virginia, area, where he attended Tunstall High School before continuing his baseball career at Virginia Tech. Public records about his parents or broader family have not been widely confirmed.
Personal Life
Mantiply’s personal life has largely been kept private, and verified information about a spouse or children has not been publicly disclosed.
2025 Season Performance
Mantiply opened 2025 still with the Arizona Diamondbacks but struggled early, allowing runs at a 15.83 clip across 10 appearances before the club designated him for assignment on May 30 and released him on June 1. The Diamondbacks promoted Jeff Brigham in the corresponding roster move. Shortly after, Mantiply caught on with the Toronto Blue Jays organization on a minor league deal on July 13 and reported to Triple-A Buffalo, where he went 2–1 with a 3.45 ERA and 19 strikeouts in 14 appearances.
After electing free agency on November 6, Mantiply re-signed with the Blue Jays on a new minor league contract on March 3, 2026, and was added to the active roster on April 5. His season was interrupted in late May when the Blue Jays announced he would undergo arthroscopic surgery on his left knee, putting the remainder of his 2026 campaign in question.
