[davidw]

Depends on the sport. Chris Froome, for instance, is one skinny dude: http://inrng.com/2014/06/the-moment-the-race-was-won-2014-da... - he's the one in the yellow jersey in the 3rd picture.

[rockdoe]

He's not exactly winning many sprints. Checking out UCI World Ranking #1's on the graph, they're reasonably in the middle.