Piersol breaks record to win
American swimmer Aaron Piersol made the most of his second chance at the Pan Pacific Championships. He failed to qualify for the 100 metre backstroke final. But officials granted the Olympic champion and World Record holder a slot after team mate Ryan Lochte pulled out, and Piersol put on a show in the pool at Irvine, California.
Piersol raced to the win in the 100-metre backstroke, setting a new Pan Pacific record time of 53.31 seconds. Japan's Junya Koga finished second, Australian Ashley Delaney took third place.
Phelps dominates to win 200m butterfly
Multiple Olympic gold medallist Michael Phelps cruised through qualifying for the 200-metre butterfly and then swam to a win in the final. Phelps finished with a time of 1 minute, 54.11 seconds. Australian rival Nick D'Arcy took second place, but was more than half a second behind Phelps with Japan's Takeshi Matsuda in third.
Seebohm sets new record to win
Australian Emily Seebohm set a Pan Pac women's 100-metre backstroke record of 59.62 seconds in qualifying heat. She then bettered her record in the final, with 59.45. Aya Tarekawa of Japan placed second,while American and Olympic champ Natalie Coughlin could only get third place.