Nick McCrory, Amy Cozad lead platform

LOS ANGELES -- Nick McCrory led the men's 10-meter platform semifinals at the U.S. national diving championships at UCLA on Wednesday, while Amy Cozad topped the women's platform standings.

McCrory, sixth at the recent world championships in China, totaled 497.30 points to lead the way into Sunday's final. He received his highest score for a back 2½ with 2½ twists.

Steele Johnson was second with a career-best score of 445.85, earning a perfect 10 from one judge on his 3½ tuck. Toby Stanley was third at 416.80.

David Boudia, who won the only U.S. medal in diving at the world meet when he finished second on platform, was sixth among the 12 qualifiers for the final.

In the women's contest, Cozad scored 328.10, earning her highest score for a back 3½ tuck in the third round. Gracia Leydon-Mahoney qualified second at 302.80. Brittany Viola, 10th at worlds, was third at 286.60. Also qualifying for Saturday's final were Anna James and Jessica Parratto, who competed at worlds, and former Olympian Haley Ishimatsu.