Formula One ( F1 )

Lastly, Senna would have known to retire gracefully and not have a couple of years off and then try to reaffirm the painfully teutonic grip upon the sport by trying to show the young ones how to do it.

Michael Jordan, Lance Armstrong, and Schumacher have all chosen to 'come back' to their sport, quite possibly expecting to be as, or nearly as, competitive again as they used to be. All still clearly very good, but none of them have, I think, achieved what they set out to achieve with this kind of late comeback.