Leadership qualities? Sorry, but unless the player has a leadership position on his team (team captain, quarterback, whatever), it's wrong to credit him with leadership qualities in the first place.
For good or ill, people all over the world look up to guys who can put a ball through a hoop or into a net or over the fence or past the batter (or batsman). I can understand that admiration. If I wanted to be a great athlete, I'd want to emulate someone who already is. The problem comes when we blur the athlete's performance on the field with his behavior off it. A great athlete might be a complete jerk. That doesn't make him any less admirable as an athlete, but it makes him not admirable at all as a person.
It sure would be nice, though, if people (athletes or otherwise) who are admired would be sensible of the fact that people admire them, and did their best to provide a good example. Are they required to? Nope. But it would be nice.