Pep Morgan ended up playing all sorts of sports over his career (he jumped from More Fun to Action Comics when that debuted, perhaps insuring a brighter future in the short run), but this is from his first appearance, when jumps into a baseball game for an missing player. Guess who lost their spot on the team?
Looks like Pep just hangs out at sporting events within earshot of the bullpen in case he gets a chance to play. And as you can see, he doesn't mind playing rough. Sometimes a spark comes off your wrist, and everyone knows you've hurt yourself, but so long as you catch the ball, eh?
They don't make sports comics like this anymore! (Or much at all, really.)