Michael Wacha is happy with the incorporation of a cutter into his arsenal.

He threw the pitch a half dozen times during a 73-pitch outing on Friday.

"I fully believe in it," Wacha said. "It's been working pretty well for me the last few outings."

Wacha first started tinkering with grips late last season and threw the cutter sporadically in his starts.

"The confidence level has definitely increased from throwing it in bullpens, throwing it warming up and then throwing it in these games for sure," he said. "I can catch them off guard with a different pitch."