AUSTIN – Greenhill freshman Chelsey Sveinsson was nearly overwhelmed by the atmosphere of the Texas Relays.

"This," Sveinsson said, "is the biggest crowd I've ever seen at a meet."

And she had to take it all in on the fourth lap while running for a Texas Relays record in the high school girls 1,600 meters.

In front of 15,931 applauding fans Saturday at Mike A. Myers Stadium, Sveinsson set the mark with a time of 4 minutes, 44.70 seconds. The previous record of 4:48.16 was set by Plano West's Erin Bedell in 2005.

"I said if it feels like I'm sprinting and I'm going too fast, but I've still got something in me, keep going and don't slow down, because you might not have the same energy in the end," said Sveinsson, who was named the meet's outstanding high school performer.

"I just did what my body felt like it could do."

Sveinsson entered the meet with the nation's best time in the 800 at 2:08.46. She made no secret of her pursuit of several goals Saturday, including the meet record and a personal best.

"On the last lap," Sveinsson added, "I said, 'This is the lap that's going to decide whether I get that record or not,' and to just give it my all."

Other athletes ranked No. 1 in the nation in their events fared well Saturday.

The Lancaster girls 4x400 relay team created more distance for itself at the top of the charts by winning in 3:43.60, 1.40 seconds better than its previous best. The victory was sealed by the final leg, but it was up to the anchor, senior Teegan Hill, to beat the clock.

"I had to run for my life," Hill said. "I looked at the clock, and I think it kind of messed me up a little bit – but not too much."

Lancaster was named the most outstanding high school team.

Lewisville senior Brandon Tucker, ranked No. 1 in the 110 hurdles, won convincingly in 13.86.

Texas senior Leo Manzano was named the outstanding college performer of the meet. Manzano broke a 42-year-old school record and a seven-year-old meet record with his time of 3:56.98 in the invitational mile.

Manzano had discussed going for the records all week and said his teammates helped him execute his strategy to perfection.

Several world-class athletes competed in the invitational races as part of their training for the Beijing Olympics.

Arlington Lamar graduate and 2004 Olympic gold medalist Jeremy Wariner anchored the victorious Waco All-Stars in the 4x400 relay.

Wariner, whose goal is to break Michael Johnson's 400 world record of 43.18, said he is constantly working on his speed and strength to make that happen.

"My race has to be perfect for me to get the record," Wariner said. "Right now, a lot of people may think it's perfect, but in my mind, I know it's not."

Tyson Gay, the world champion in the 100 and 200 meters, anchored the USA Blue team to a win in the invitation 4x100 in 38.63, just ahead of a USA Red team that included ex-TCU star Darvis Patton and Garland's J.J. Johnson.

Gay has been training in Arlington with former TCU sprinter-turned-coach Jon Drummond.