Hicham El Guerrouj versus Kenenisa Bekele. 5000m, Athens Olympic games, 2004. 1500m champ vs. 10000m champ.
Moral of the story: If you are the 10km champ and are up against the 1500m in 5000m, please try and gap him and not wait till the last 100m.
PS: I suggest you just watch the last minute.