BATON ROUGE, La. -- Walter Davis added the triple jump title to his long jump crown and ran the first leg of LSU's winning 400-meter relay team Friday night in the NCAA Outdoor Track and Field Championships.

On his home track, it was the perfect end to his college career.

"This week has gone just like I dreamed it would," he said.

The 2000 Olympian's performance, coupled with a hamstring injury that could keep Tennessee sprinter Leonard Scott out of Saturday's competition, set up a final-day showdown between the Volunteers and LSU for the men's team title.

"It seems like it's going to be a fight to the end," Tennessee sprinter Justin Gatlin said.

LSU had 39 points after 10 events. South Carolina and Florida had 19 apiece. Tennessee had 18.

In the women's competition, South Carolina freshman Leshinda Demus set a world junior record in the 400 hurdles. She won in 54.85 seconds, just ahead of teammate and fellow freshman Tiffany Ross.

The old mark of 55.20 was set by Leslie Maxie of the United States in 1984. Ross, the Junior Olympics champion in the event last year, finished in 55.22.

"I knew we had a fast crowd coming in because we all came in qualifying very high," the 19-year-old Demus said. "And I knew if we were qualifying like that, we were going to go fast in the finals. It wasn't that surprising. It was appreciated, though."

Chaniqua Ross gave the favored UCLA women their third victory of the meet when she won the discus at 182-10. The Bruins had 44 points after 12 events. South Carolina was second with 40, followed by Florida with 24 and defending champion Southern California with 19.

Davis, who won the long jump on Wednesday night, began defense of his triple jump title just minutes after his relay run.

"The relay was more fun because they had picked us to come out third or fourth," he said, "and we just came out and upset some people. It kind of juiced me up."

Davis already had clinched the triple jump when he got off a personal best mark on his final jump, 56 feet, 10¾ inches.

He is the first to win both jumps since Robert Howard of Arkansas did it in 1998.

Tennessee was favored to win the men's 400 relay, but finished third. Moments later, Scott was hurt and the Vols were far from a sure thing to defend their crown.

LSU had its problems, too, on a humid night at Bernie Moore Stadium.

The Tigers' Lueroy Colquhoun, who was headed for a third-place finish, fell after hitting the last barrier in the 400 hurdles.

Scott, a senior from nearby Zachary, La., is counted on for big points along with Gatlin in the 100 and 200. But he said he felt a pop in his right hamstring about 10 meters from the finish of his semifinal heat. He still managed to qualify seventh. Afterward, though, he could hardly walk.

"Maybe I'll be back tomorrow and maybe not," Scott said. "If there's any way I can run, I will. If it's going to take me to run for us to win, that's what I'm going to do, hurt or not."

The LSU relay team of Davis, Robert Parham, Pete Coley and Bennie Brazel, won in 38.48 seconds. Clemson was second in 38.83, a hundredth of a second ahead of Tennessee.

Tennessee's first baton exchange, between Sean Lambert and Gatlin, was a sloppy one, and so was the third handoff from Hassan Stamps to Leonard Scott.

"I had a hard time. The baton was slippery," Stamps said. "I couldn't get the baton, and when I finally did, they (LSU) were already running."

Rickey Harris, a sophomore from Florida, won the 400 hurdles in 48.16 seconds, the third-fastest time in the world this year. Brazel was second in 48.80.

Daniel Lincoln of Arkansas and Otukile Lekote of South Carolina repeated as NCAA champions. Lincoln won the 3,000 steeplechase in 8:22.34. Otukile defended his 800 title in 1:45.17. Brian Hunter of Texas won the pole vault at 18-8¼.

South Carolina won the women's 400 relay in 43.12 seconds. LSU was second at 43.80 and defending team champion Southern California third at 43.80.

But a few minutes later, the anchor on South Carolina's team, Aleen Bailey, was disqualified for a false start in the 100 semifinals.

Angela Williams of Southern California, trying to become the first sprinter to win four NCAA titles in the same event, advanced to the finals but was second in her semifinal heat to teammate Natasha Mayers, whose 11.28 time was fastest of the qualifiers.

Gatlin, the defending 100 and 200 champion, had the top time of 10.05. He will run the 100 and 200 on Saturday, and maybe more. Gatlin said he already had been told by coach Bill Webb that he might be running in the meet's final event, the 1,600 relay, on Saturday.

South African Janus Robberts of SMU, one of the world's best shot putters, won the discus at 204 feet, 7 inches on his second throw. Carl Myerscough of Nebraska was second at 198-1 in a competition that ended just before a thunderstorm swept in and put a one-hour hold on the meet.

Robberts and Myerscough will meet again Saturday in the shot put.

"I'm going to launch it into space tomorrow," Robberts said. "It will be awesome, for sure."