Mitch Keller’s struggles have become a major concern for the Pirates, especially against left-handed hitters. Alex Stumpf breaks down Keller’s alarming platoon splits, the mechanical issues that may be hurting his arsenal and why his cutter and changeup have failed to provide an answer. With the All-Star break approaching, can Keller make the adjustments needed to turn his season around?

Watch or listen to the latest episode of OffBeat for the full discussion.