Imanaga’s injury follows a start Tuesday in Pittsburgh in which he left in the sixth inning with leg cramps in both legs. He said he felt good Sunday before the injury, and “there was no sign in the back of my leg” before the start.

The Chicago Cubs are going to be cautious with Shota Imanaga while the left-hander recovers from his first hamstring injury.

Chicago's bullpen subsequently allowed a pair of inherited runners to score, impacting Imanaga's line for the worse. The book closed on his afternoon with him surrendering two runs on four hits and a walk. He also struck out four of the 22 batters he faced.