Kopech made his second start of the season Sunday and was outstanding, allowing one run on four hits with 10 strikeouts and no walks in five innings in the 8-4 win.
The Sox have used Kopech primarily as a reliever, and he has a 1.17 ERA in four relief appearances. He has a 2.25 ERA in his two starts.
“It’s made this season a little bit easier for me because it’s not knowing when you’re pitching and it makes you be a lot more present for every pitch that you throw,” he said Sunday. “If they call me tonight and say I’m going to pitch tomorrow, I need to be ready to face those hitters tomorrow.