To me, a guy who's drenched with sweat and testosterone, while ripe, is not at his peak. I'll be plucking him after he showers, you know? (Our bathroom is a virtual miasma until Mr. Maryn's running stuff has dried enough to be put in the hamper. I'd rather pee in the yard than inhale in there.)
Of course the nationality of the target audience is a huge factor that means cricket and rugby are ruled out by my American ignorance, so I'll say baseball. Unlike football and basketball, its players have all sorts of different body types (something for everyone!), are of mixed races and ethnicities (really, something for everyone!), span ages from recent high school graduates to early 40s (I swear, there's something for everyone!), all in a sport which doesn't leave every active player sopping with perspiration. And the standard uniform is snug, with no padding except for the catcher, so you know what you're getting.
Although I agree there's something inherently sexy about a man or woman who's good at billiards or pool. Why is that?
Maryn, Red Sox fan