Can we stop with the knee cap as being a proximate cause of Yelich's slump? It was a fracture of the knee cap. Nothing was shattered. He didn't even need surgical intervention or any serious medical treatment outside a knee immobilizer. More importantly, Yelich is 4th on the Brewers in sprint speed behind Garcia, Cain and Taylor. If his fractured knee cap was effecting him at the plate, you could bet that it would also impact his sprint speed. Not necessarily, buddy of mine played at Whitewater and one of his teammates had the same injury. Guy was never the same hitting. Still ran well though. Knees are a funny thing. I had a knee injury about 5 years ago and every now and then I can feel it when hitting a softball, but have no issues running and still move well. Obviously I am not an athletic specimen like Yelich, but I could see the knee being a prolonged issue.