Pedro Martinez has suggested that Major League Baseball is using balls that are too tight since he last pitched in 2009, which has resulted in more home runs.

"I've seen a lot of homers that shouldn't be homers," Martinez said.

The former pitcher used his signature to further illustrate his case that the ball is juiced.

"For those of you that doubt it, that don't know it, look how small my signature needs to be," Martinez said. "Some of the skinniest fingers. If I want to throw a two-seam fastball, there's no way I can get my two fingers in there and not touch the seams over there."