Jim Henderson spent his off day Thursday watching comparative videos of his appearances last year with the Brewers and this spring, when he has struggled badly.

The reliever said he immediately found a flaw in his delivery.

"I've been a little too tall in my delivery," he said Friday morning. "I need to be more rotational. And my hands were a little too close to my body. It's just going to be a quick little fix."

Henderson went looking for answers after another bad outing Wednesday night against Arizona, during which he allowed three walks, one hit and four runs in only one-third of an inning. For the spring, he has a 10.80 ERA in four outings, plus he also struggled during his time with Team Canada in the World Baseball Classic.

Henderson arrived in the majors last season after a 10-year journey in the minors and pitched well enough to be a favorite for a setup role in the bullpen this year. But he has not been able to command his pitches, which is why he opted to look at comparative videos on the off day.

"I wasn't too worried about it; I knew it would be one little fix and I'd be fine," he said. "I could immediately see I wasn't starting (my delivery) the same. My arm was staying behind my hip. I just need to rotate more and clear my hip. This will get me back to where I was."