COLUMBIA, Mo. (AP) -- Cesar Cielo and Amanda Weir each earned a second gold medal at the Missouri Grand Prix, winning in the 100-meter freestyle one night after taking first in the 50 free.
Cielo, from Brazil, surged past Richard Hortness of Canada after the turn to finish in 49.51 seconds Sunday. American Matt Grevers was third.
Weir had an easier time, leading throughout to win in 54.41 seconds over Hannah Wilson.
In the men's 200 backstroke, 16-year-old Ryan Murphy of Jacksonville, Fla., outlasted Canadian Tobias Oriwol to win in 1 minute, 59.11 seconds. Murphy hopes to appear in his first Olympics this summer in London after a recent run of success that includes a third-place finish in the 2011 Pan American Games in Guadalajara, Mexico.