Chicago White Sox right-hander Michael Kopech was placed on the 15-day injured list Tuesday because of a left knee strain that he suffered while warming up prior to his start Monday against the Kansas City Royals.

Kopech, 26, called team trainers to the mound while throwing his warm-up pitches but stayed in the game. He faced four batters — hitting one, allowing an RBI single to Salvador Perez, and walking the bases full before departing. The Royals scored four times in that first inning en route to a 6-4 win.

“What sucks most about today is I put the team in a tough situation,” Kopech said after Monday’s game.

Kopech is 4-9 with a 3.58 ERA in 23 appearances this season, his first as a starter.

The team recalled left-hander Tanner Banks from Triple-A Charlotte to take Kopech’s spot on the roster, but he might not take his place in the rotation. Banks has appeared only in relief this season.

Right-hander Davis Martin, currently in Charlotte, has started four games for the White Sox this season and could be called upon for a spot start when Kopech’s turn in the rotation comes up again.