Michael Phelps has opted out of the 200m freestyle at the Olympic Games and will instead chase seven gold medals.
The American is expected to concentrate on two butterfly and two individual medley events as well as three relays.
Phelps is the most successful Olympian ever, having won a total of 14 golds, including eight in Beijing in 2008.
Phelps had seemed ready to compete in eight events after he won three at the US trials.
But although he won the 200m freestyle in Beijing four years ago, he has since been beaten over that distance in the last two World Championships.
He has won a total of 38 world and Olympic gold medals in his career but admitted he struggled for motivation after Beijing 2008.