Anthony Misiewicz Bio
Anthony Misiewicz is an American professional baseball pitcher and free agent. He has appeared in Major League Baseball for multiple teams after being selected in the 2015 MLB draft and made his major league debut in 2020.
Early Life and Background
Anthony Misiewicz was born on November 1, 1994, in New Baltimore, Michigan. He graduated from Anchor Bay High School, where he developed as a left-handed pitcher and earned the chance to play at the collegiate level.
Misiewicz attended Michigan State University and pitched for the Michigan State Spartans. During his junior season in 2015 he posted a 5–4 record with a 3.80 earned run average across 18 appearances, including eight starts, and spent a brief period that summer with the Cotuit Kettleers of the Cape Cod Baseball League.
Path to Baseball
After his junior year at Michigan State, Misiewicz entered the 2015 MLB draft and was selected by the Seattle Mariners in the 18th round. He signed with the Mariners rather than return for his senior year, accepting a reported signing bonus to begin his professional career.
Misiewicz progressed through the Mariners’ minor league system, making his professional debut with the Everett AquaSox and later advancing through levels that included stops at Modesto, Arkansas, Bakersfield and Tacoma. His minor league work and left-handed delivery positioned him as a depth arm capable of stepping into relief roles at the major league level.
Anthony Misiewicz Career
Early Career (2015–2019)
Following the 2015 draft, Misiewicz debuted professionally with the Everett AquaSox, where he recorded a 3–2 record and a 2.14 ERA in 46 1/3 innings. Over the next several seasons he logged substantial innings in the Mariners’ system, including a 2016 campaign with the Bakersfield Blaze and a 2017 season that featured assignments to Modesto, the Arkansas Travelers and the Montgomery Biscuits after a trade.
In 2017 he combined for 28 starts across three minor league stops and produced an 11–6 record with a 4.51 ERA. Misiewicz returned to Arkansas in 2018 and spent 2019 with Arkansas and the Triple-A Tacoma Rainiers, striking out well over 100 batters and refining his approach before reaching the majors.
Seattle Mariners Breakthrough (2020–2022)
Anthony Misiewicz made his Major League Baseball debut with the Seattle Mariners on July 24, 2020, facing the Houston Astros and allowing one run in one inning. He spent parts of the 2020 through 2022 seasons with Seattle, moving between the majors and Triple-A Tacoma as the organization used him out of the bullpen.
Across his initial MLB time with the Mariners, Misiewicz recorded appearances that established him as a left-handed relief option, though he continued to shift between levels as Seattle managed roster needs. He was designated for assignment by the Mariners on July 31, 2022, after which his tenure in Seattle concluded.
Kansas City Royals (2022)
On August 1, 2022, Misiewicz was traded to the Kansas City Royals for cash considerations. He appeared in 15 games for Kansas City down the stretch, posting a 1–1 record with a 4.11 ERA and recording 19 strikeouts in 15.1 innings, providing situational left-handed relief during the final weeks of the season.
Misiewicz’s time with the Royals was limited to that late-2022 stint; he was later designated for roster moves as teams adjusted their pitching staffs during the 2023 offseason.
Arizona Diamondbacks (2023)
At the outset of spring training in 2023 Misiewicz was traded to the St. Louis Cardinals and then moved to the Arizona Diamondbacks in a subsequent transaction for cash considerations. He made seven appearances for Arizona, recording a 5.63 ERA with six strikeouts in eight innings before a calf strain sidelined him for several weeks and led to a stint in Triple-A Reno upon activation.
The Diamondbacks designated Misiewicz for assignment in June 2023 as roster adjustments were made midseason, and he returned to the waiver pool where other organizations claimed him in quick succession.
Detroit Tigers (2023)
The Detroit Tigers claimed Misiewicz off waivers on June 18, 2023, and optioned him to Triple-A Toledo. He was briefly recalled to Detroit on June 27 to replace an injured reliever, but after a short outing he was optioned back to Toledo and later designated for assignment. Misiewicz cleared waivers and was outrighted to Triple-A Toledo on July 1, 2023.
His time in Detroit was brief and primarily managed at the Triple-A level as the Tigers used organizational depth to cover innings and bullpen needs during that season.
New York Yankees Era (2023–2024)
The New York Yankees claimed Misiewicz off waivers on July 6, 2023, and assigned him to Triple-A Scranton/Wilkes-Barre. New York promoted him to the major leagues on September 10, 2023. During that call-up he was struck in the head by a line drive on September 15 and subsequently placed on the injured list after hospital evaluation; he was non-tendered and became a free agent in November 2023 before re-signing on a minor league contract in December.
Misiewicz spent the 2024 season largely with Triple-A Scranton, where he made 23 appearances and recorded a 3.23 ERA with 37 strikeouts and four saves across 30 2/3 innings. The Yankees selected his contract on June 18, 2024, for a brief major league appearance before designating him for assignment in September; he cleared waivers and elected free agency after the season.
Minnesota Twins Era (2025)
Anthony Misiewicz signed a minor league contract with the Minnesota Twins on January 18, 2025, and opened the year in Triple-A with the St. Paul Saints. In 26 appearances for St. Paul he posted a 2–2 record with a 4.02 ERA, recording 29 strikeouts and eight saves across 31 1/3 innings before the Twins selected his contract on July 9, 2025.
Misiewicz made five appearances for Minnesota, logging five strikeouts across 4 2/3 innings but struggling to a 9.64 ERA. On November 6, 2025, he was removed from the 40-man roster and outrighted to St. Paul; he rejected the assignment and elected free agency, returning to free-agent status ahead of the 2026 offseason.
Pitching Style and Strengths
Misiewicz is a left-handed pitcher whose profile centers on relief work and matchup value against left-handed hitters. Throughout his professional career he has been used in short relief appearances where his ability to generate strikes and induce swings on short leashes is most valuable.
Notable Events and Milestones
Key moments in Misiewicz’s career include his MLB debut with the Seattle Mariners on July 24, 2020, and the September 2023 incident in which he was struck in the head by a line drive and subsequently placed on the injured list. He has been the subject of multiple waiver claims and trades, reflecting how teams have viewed him as a useful left-handed bullpen option across several organizations.
Anthony Misiewicz Career Wins
Through the 2025 season Misiewicz holds an MLB win–loss record of 8–9 with a 4.86 earned run average and 119 strikeouts. Those totals reflect his work across relief appearances for several major league clubs between his 2020 debut and the end of the 2025 season.
MLB Highlights
Misiewicz’s major league totals include the 8 wins and 119 strikeouts compiled through the 2025 campaign, with the bulk of his appearances coming as a reliever. His sustained presence on 40-man rosters and recurring claims off waivers demonstrate recurring interest in his left-handed relief profile.
Other Wins & Perfromances
In the minors Misiewicz produced notable seasons such as the combined 11–6 record and 4.51 ERA across three clubs in 2017 and his strong 2015 debut with Everett, where he went 3–2 with a 2.14 ERA in 46 1/3 innings. Those performances helped him ascend to Triple-A and eventually to the major leagues.
Anthony Misiewicz Family
Family Background and Baseball Lineage
Misiewicz grew up in New Baltimore, Michigan, and developed through the local high school and college baseball systems before entering professional baseball. Public records in the supplied sources do not provide additional family details.
Personal Life
Public information notes Misiewicz’s education at Anchor Bay High School and Michigan State University, where he played collegiate baseball for the Spartans. Other personal details, including residence and family, are not specified in the provided sources.
2025 Season Performance
The 2025 season saw Misiewicz sign with the Minnesota Twins organization, work as a primary late-inning option for the St. Paul Saints in Triple-A and earn a midseason promotion to the major league roster. His performance in Triple-A included eight saves and 29 strikeouts, demonstrating his role as a high-leverage option at the minor league level.
After his July call-up to Minnesota he made five appearances but struggled with a high ERA in limited innings. Following the season Misiewicz was removed from the 40-man roster and elected free agency, making him available to sign with a new organization ahead of the 2026 season.