Michael Schumacher

Back when it started if you'd driven in F1 for 19 seasons, you'd consider yourself lucky to come out the other side (average of 1.5 deaths per annum in the 1950s and 1960s). But Schumacher got away with nothing but a broken leg.

Then he gets on a ski slope and ends up in a coma.

(it's also the case that pros rarely get killed playing rugby, it's the amateur club players)