Dodgers pitcher Zack Greinke made a mechanical adjustment in the fifth inning of his minor-league start Wednesday that led to a potential breakthrough, as he induced an inning-ending ground ball and struck out the next four batters, MLB.com reports.

"I tried something with a pitch and it came out perfect," Greinke said.

Greinke allowed two runs on five hits in seven innings while striking out nine and throwing 85 pitches Wednesday.

"Not many guys can make one pitch and completely turn their game around," catcher Yasmani Grandal said. "He was like, they're not going to hit me anymore. It was a mechanical thing, [pitching coach Rick Honeycutt] said something with his face or the way he was looking."

Greinke's next start will come April 7 against the Padres in his regular-season debut.