Seattle Mariners Kerr signed with the
Seattle Mariners of
Major League Baseball as an
undrafted free agent on August 24, 2017. He split the 2021 campaign between the Double-A
Arkansas Travelers and Tacoma, pitching to a 3.18 ERA with 60 strikeouts in 36 appearances. The Mariners added him to their
40-man roster to protect him from the
Rule 5 draft following the season on November 19, 2021.
San Diego Padres On November 27, 2021, the Mariners traded Kerr and outfielder Corey Rosier to the
San Diego Padres in exchange for
Adam Frazier. He was assigned to the Triple-A
El Paso Chihuahuas to begin the 2022 season. On April 22, 2022, Kerr was promoted to major leagues for the first time to replace the injured
Pierce Johnson. He made his major league debut on April 24. He appeared in seven games for San Diego in his rookie campaign, pitching to a 9.00 ERA with three strikeouts in five innings pitched. Kerr was optioned to Triple-A El Paso to begin the 2023 season.
Atlanta Braves On December 15, 2023, the Padres traded Kerr,
Matt Carpenter, and cash considerations to the
Atlanta Braves in exchange for Drew Campbell. He was optioned to the Triple–A
Gwinnett Stripers to begin the 2024 season. On May 7, 2024, Kerr was selected to the active roster following an injury to
Tyler Matzek. On May 24, Kerr made his first career start against the
Pittsburgh Pirates. In 10 games, he recorded a 5.64 ERA with 27 strikeouts across innings pitched. On June 24, it was announced that Kerr would require
Tommy John surgery, ending his season. On November 22, the Braves non–tendered Kerr, making him a free agent. On November 26, 2024, Kerr re–signed with the Braves on a minor league contract. ==References==