I love Michael Fred Phelps,he's a great swimmer in the Olympics
I've heard of him, but I really don't know much about him.
You don't follow the Olympics?  Phelps also holds the all-time records for Olympic gold medals (23), Olympic gold medals in individual events 
Oh wow, I had no idea! He must be an incredible swimmer!
Also,When he won eight gold medals at the 2008 Beijing Games, Phelps broke fellow American swimmer Mark Spitz's 1972 record