In other action Saturday , controversial Brazilian star Cesar Cielo earned his second sprint title in the men 's 50m freestyle with a winning time of 21.52 seconds . Michael Phelps takes his second gold of the world swimming championships . Phelps wins 50m freestyle but says he is short of peak fitness . Shanghai superstar Phelps has a record 50 world titles . Brazil 's Cesar Cielo wins 25 m free for his second gold in Shanghai .
Michael Phelps takes his second gold of the world swimming championships . Phelps wins 50m freestyle but says he is short of peak fitness . Shanghai superstar Phelps has a record 50 world titles . Brazil 's Cesar Cielo wins 25 m free for his second gold in Shanghai .