Sydney McLaughlin punched her ticket to the athletics World Championships with a world record 51.41 seconds victory in the 400 meters hurdles at the US trials on Saturday.

McLaughlin shaved five-hundredths of a second off the world record of 51.46 she set in winning Tokyo Olympics gold on August 4, delivering a dominant performance at Eugene's Hayward Field that saw runner-up Britton Wilson cross the line more than a second back in 53.08 seconds.

Shamier Little was third in 53.92. The trio will represent the United States on the same Hayward Field track in July - when reigning World Champion Dalilah Muhammad also aims to defend her title.

With a bye as champion Muhammad - who beat McLaughlin in Doha in 2019 but took silver behind her in Tokyo - received a waiver to skip the trials to recover from a hamstring injury.

McLaughlin showed she didn't need her great rival to push her to new heights in this championship season, and sounded a warning for those coming to challenge her in Eugene, where she broke the world record for the first time in June 2021. "Anytime I come here I can just feel something amazing's going to happen," McLaughlin said.

She said nothing compared the "awe" of breaking the world record for the first time - but that doesn't mean she won't be aiming to do it again next month.

"This is just a great indicator of where we are," she said. "Hopefully we're going to go home and work on a few things and try to come back and improve on it."

Talitha Diggs, daughter of four-time Olympian Joetta Clark-Diggs and the NCAA collegiate champion, used a powerful finishing kick to win the women's 400 meters in 50.22, overhauling early pace-setter Lynna Irby and Kendall Ellis in the final 20 meters.

Ellis took second in 50.35 and Irby was third in 50.67.

Michael Norman, seeking World Championships gold to help expunge the memory of a disappointing fifth-place finish at the Tokyo Games, delivered an emphatic victory in the men's 400 meters with a world-leading 43.56 seconds.

Another NCAA winner, Champion Allison, broke 44 seconds for the first time, taking second in 43.70, with Randolph Ross third in 44.17.

World record-holder Keni Harrison won the 100 meters hurdles in another ­world-leading time of 12.34 seconds. Alaysha Johnson was second in 12.35 and Alia Armstrong was third in 12.47.

World champion Nia Ali opted out of the final but will complete the US contingent in the event next month.