Diamondbacks pitcher Rubby De La Rosa struggled in his most recent appearance against the Mariners.
"I was rushing a little," De La Rosa said. "It's not a big deal. I tried to do too much, tried to throw perfect pitches. I think that's what made me rush a little bit."
After having a successful first inning, De La Rosa faltered in the second.
"The first inning he wasn't [rushing]," D-backs manager Chip Hale said. "After that he definitely was rushing or something was different about it because he didn't throw as many strikes. We're just seeing some chinks in the armor. We're going to have to fix it. It's our job."
De La Rosa, 26, began his career with the Dodgers, then spent time with the Red Sox, before joining the Diamondbacks.