COLLEGE STATION, Texas (AP) _ Nate Dusing set a record in the 200-yard individual medley and helped defending champion Texas take the lead Thursday in the NCAA swimming and diving championships.

Dusing, who finished second in the 200 individual medley last year, set the record this year at 1 minute, 42.85 seconds. He broke the record of 1:43.52 set by Greg Burgess of Florida in 1993. The swim was also an American short course record and the senior's first national title.

``I haven't had this much fun swimming in a long time,'' Dusing said. ``I went out after it and everything was clicking.''

Dusing also helped the Longhorns set an NCAA record in the 400 medley relay with a swim of 3:05.37, breaking Stanford's record of 3:07.28 set in 1995. Brendan Hansen, Tom Hannan and Ian Crocker were the other relay swimmers for the Longhorns.

Troy Dumais of Texas won the 1-meter springboard diving competition for the second consecutive year with 397.60 points. Dumais will try to defend his 3-meter title on Saturday.

Texas leads with 185 points after the first of three days of competition. Stanford (170) is second and Tennessee (114.5) third.

Anthony Robinson of Stanford pulled off an upset in the 50 free with a swim of 19.15 seconds, beating Anthony Ervin of Southern California (19.23) and Roland Schoman of Arizona (19.29), who finished 1-2 in the event last year.

Robinson also helped the Cardinal win the 200 free relay in 1:16.83.