In April, Corey Knebel suffered a serious left hamstring injury and missed 6 weeks. Since his return, he obviously hasn’t been nearly as effective as he was last year. Having been a right-handed pitcher back in the day and having suffered a left hamstring injury, it wouldn’t surprise me if the hamstring is a significant cause of Knebel’s struggles. I recall missing some of the flexibility and strength in my left leg which resulted in it being tough to get my upper body to rotate over my plant leg. This impacted my ability to keep the ball down. With a seemingly healthy arm and no drop in velocity, this seems to be a more plausible reason for his struggles than him waking up one day and sucking. Hopefully with an off-season of rest, we’ll see 2017 Knebel again in 2019.