If you were competing in the same race he was and you ran into him the night before the race, would you stop him and as him for an autograph? Because that would imply complete ownership of you, as you're competing just like him, you may have zero chance of beating him, but none the less, you are a competitor too. You don't see the opposing coach of some small non Division 1 team, playing Alabama in a game that they are about to get killed in by 80 points, asking Nick Saban for his autograph the night before the game. There is nothing wrong about asking him to pose with you for a picture for Facebook, but asking for an autograph implies that you are just some loser.You're putting your shoes on tomorrow just like he is and you signed up to race and he's a competitor, so he is your competition. Would you ask him to sign an autograph?