SINGAPORE - Olympic champion Joseph Schooling will swim his first race of this week's National Collegiate Athletic Association (NCAA) Division I Men's Swimming and Diving Championships in Indiana, starting from 10pm tonight (March 23, Singapore time).

The 21-year-old University of Texas junior will compete in Heat Five of the 50-yard freestyle event tonight. The finals start from 6am on Friday. Schooling won the event in 18.76sec at last month's Big 12 Conference, which comprises 10 schools from five US states, breaking Jimmy Feigen's eight-year Conference record in the process.

He will also defend his titles in the 100- and 200-yard butterfly events, which take place on Friday and Saturday night respectively.

Fellow Singaporean Quah Zheng Wen, a freshman at University of California, Berkeley, has also been pencilled in for both events. The 20-year-old finished the 200-yard butterfly event in an NCAA 'A' qualifying time of 1min 40.36sec at the Pac-12 Invitational in Washington.

There, he also clocked NCAA 'B' qualifying times in the 100-yard fly (46.77sec) and 100-yard backstroke (47.05sec).

Athletes with 'A' times can compete in events in which they have clocked 'B' times, should their college choose to field them.

The NCAA Championships take place from March 22 to 25. Visit the NCAA event page for more information.

Tonight's race will be streamed live at http://iupuijags.com/watch/?Live=484