Here is another rare do good example by an (ex-)athlete.
Alonzo Mourning got out of his car and used his defensive blocking skills to stop traffic to allow a disabled person to cross a busy street. Full story here.
What strikes me about this instance especially is that he got out of his car to do it. It's one thing if he was a pedestrian himself there, but the fact that he stopped what he was doing, got out of his car, and helped this person shows extra Well-Met manners.