Originally Posted by albatros_forehand
So let's put it this way. If you decide to go on you are 100% (and no need to cry about it later)
Or you can finish the match and not puss out. Personally I think Federer does the best about it most of the time. He might mention an injury if they ask, but always gives credit. (almost always, rather). And he doesn't retire. Just look at his match with murray at WTF 08, clearly having back issues but finished the match.