27-year-old Anthony Misiewicz, born November 1, 1994, is an American professional baseball pitcher for the Major League Baseball Seattle Mariners (MLB). He stands at 6 feet 1 inch tall. In 2020, he made his MLB debut.
Misiewicz received his high school diploma from Anchor Bay High School in Fair Haven, Michigan. He attended Michigan State University and was a member of the Michigan State Spartans baseball team.
In his junior year of 2015, he went 5–4 with a 3.80 earned run average (ERA) in 18 games (eight games started). Following the season, he briefly played collegiate summer baseball with the Cape Cod Baseball League’s Cotuit Kettleers.
The Seattle Mariners selected Misiewicz in the 18th round of the 2015 MLB draft. He signed with the Mariners for a $70,000 signing bonus rather than returning to Michigan State for his senior year.
After the season, the Mariners reacquired Misiewicz from the Rays for an international signing bonus slot. In 2018, he returned to play for Arkansas, pitching to a 3–12 record and 5.51 ERA in 21 starts.
He missed nearly a month during the season due to injury. Misiewicz began 2019 with Arkansas before being promoted to the Tacoma Rainers. Over 26 games (24 starts), he went 9–8 with a 4.59 ERA, striking out 125 over 131+1⁄3 innings.
On July 24, 2020, Misiewicz made his major league debut against the Houston Astros, giving up one run in one inning. For the season, he was 0–2 with a 4.05 ERA.