I asked this same question over at the sexually-repressed TW boards and all the straight-closeted guys complained about it so my post got deleted.
So I thought I'd pose the question here, because I know the MTF crowd is far more socially advanced, cooler, and most importantly have a fun, perverted sense of humor.
During my voyeuristic travels to various gay websites to assist in my search for gay knowledge, I've found that the following male tennis players names come up more frequently than others, give or take a random passing interest in someone like Robert Kendrick
or Jan-Michael Gambill
I have also discovered that when it comes to fan/slash fiction, there are predominantly four players who top the list of S&M protagonists: Federer, Roddick, Safin, Nadal (in no particular order because they all keep switching positions anyway). Note the lack of effete players on this list.
Notice also that these fans seem to be quite taken by either the hirsute (Federer, Safin) or the machismo (Roddick, Nadal). Coincidence? Interestingly enough, I see more Federer/Safin pairings in fan fiction but have yet to see any Roddick/Nadal pairings. Somebody get to work on that.
I've seen lots of Roddick/Fish/Blake threesomes though. Flobbick?