SINGAPORE - Singapore swimmer Joseph Schooling got his world championships campaign in Kazan, Russia, off to a promising start on Sunday, clocking a speedy 23.40seconds in the men's 50m butterfly for the fifth-fastest time overall.
Swimming beside defending champion Cesar Cielo of Brazil, Schooling topped his heats. The Singaporean's timing is a new national record and improves on his previous best of 23.43sec clocked at the Commonwealth Games last year. The timing qualifies him for the semi-final at around 11.07pm on Sunday night.
Schooling, 20, must be in the top eight of the semi-finals to earn a place in the final.
In other events, Quah Ting Wen clocked 1:00.30 in the women's 100m butterfly event to finish 36th out of 69 swimmers. She did not qualify for the semi-finals.
Team-mate Danny Yeo posted a 3:57.44 in the men's 400m freestyle to finish 40th out of 58 swimmers, and did not qualify for the final.
Rachel Tseng swam in the women's 400m freestyle heats, clocking 4:19.97 to finish 33rd overall, but did not qualify for the final.
In the women's 4x100m freestyle relay, Quah, Amanda Lim, Tseng and Nur Marina Chan clocked a time of 3:51.10 to finish 18th overall. They did not qualify for the final.
In the men's 4x100m freestyle relay, Pang Sheng Jun, Quah Zheng Wen, Yeo and Lionel Khoo clocked 3:27.01 to finish 28th overall. They also did not qualify for the final.