Seattle Mariners left-hander James Paxton will have season-ending surgery, manager Scott Servais announced Tuesday.

Paxton, 32, left Wednesday night's start, his first back with the Mariners following two seasons with the Yankees, after 1 1/3 innings. The team called the injury a forearm strain, leading Paxton to get a second opinion on Thursday.

Paxton was limited to 20 1/3 innings over five starts with the Yankees in 2020 while battling multiple injuries. That came after he posted a career-high 15 wins in 29 starts for New York in 2019.