Peanuts Lowery, probably, Boonton, correct?
A few I came up with while perusing the thread to this point - sorry if some might be repeats:
Cheetah currently could be Tyreek Hill, or, for golfers, a nickname given DJ back a few years ago. Of course, for football fans, Tom Brady has also been called Cheetah for other reasons.
Spud Chandler and Spud Webb
Apologies, Meyers7, Tom Terrific was, as someone else mentioned, originally Tom Seaver.
Smokey Burgess
Biff Pocoroba
The Brown Bomber
Teddy Ballgame and The Splendid Splinter was also known as The Kid... back before most of us were around.
The Iron Horse... Lou Gehrig
Dizzy Dean
The Say Hey Kid... Willie Mays
Stormin' Norman Cash
The Human Vacuum Cleaner... Brooks Robinson
The Blade... Mark Belanger
Finally, for the moment, one every UConn sports fan should know: The Poughkeepsie Popper!
This is fabulous stuff. Great lists by Huskee11, Meyers7 and others. I'm humbled to be surrounded here by so many knowledgeable sports fans. Keep 'em coming. Thanks, Carnac!