Johnny Damon II.

Baseball Prospectus has an interview with Ryan Kalish.

He's an outfielder up in Portland, who might eventually settle into center field. He's an athletic lefty, who runs the bases well. He's a lead-off hitter type, who puts together nice at bats. The Johnny Damon comparison doesn't end there, though. Says Kalish:

"...they actually have a nickname for me. I'm like the caveman."

Clearly, he sees it too.