Cardinals starting pitcher Joe Kelly suffered his first loss in four starts since coming off the disabled list Wednesday at San Diego. However, he's struggled for the most part since his activation despite the one loss. 

The right-hander has posted a 7.32 ERA over his last four starts, and Kelly said his struggles have been related to poor command of his fastball, per MLB.com.

"It's running a lot," Kelly said of the pitch. "It's just something that I have to learn how to control here and be better at next time. I've been throwing good offspeed pitches, I feel, in all these games. My curveball was my best pitch (Wednesday). I should have thrown it 100 times. But you can't do that, obviously. It definitely all starts with the fastball."