Spitz tips Phelps to overtake his Olympic medals record

Michael Phelps will become the most successful athlete at one Olympics by winning eight gold medals in Beijing, according to Mark Spitz - the man he is bidding to overtake.

The 23-year-old from Baltimore begins his record bid in the heats of the 400metres individual medley in the Water Cube on Saturday after narrowly failing to match fellow American swimmer Spitz's haul in Athens in 2004.