This might be old, but we haven't seen it before, so here it is: underwear advertising from a Playboy magazine in 1977 (they're all Jockey ads).
Included, of course, are Jim Palmer, a very Euro Mike Riordan, an inevitably cool-looking Jamaal Wilkes, an unfrozen caveman-esque Pete Rose (shirtless!) and, our personal favorite, this photo of Steve Carlton, looking like a circus character.
For all our "female and non-traditional male" readers that are always piping up in the comments ... this probably doesn't count as beefcake, does it? Sorry. We tried.
Jock Pitch [Swapatorium]