Noah Lyles runs fastest 100m of year in 9.88secs
American Noah Lyles ran the fastest 100m of the year to win the US national title in Des Moines, Iowa.
The 20-year-old clocked 9.88 seconds, ahead of Ronnie Baker and Kendal Williams.
In the semi-finals, Lyles had equalled Mike Rodgers' world-leading time of the year of 9.89, set in Thursday's heats.
Baker's 9.90 in the final was the third-quickest time of 2018, while Britain's Zharnel Hughes, 22, last week ran 9.91.
Hughes' time was the quickest of the year until the USA Track & Field outdoor championships.
World indoor record holder Christian Coleman and 100m world champion Justin Gatlin are both missing from the event.
Lyles said: "It proved I am out here with the big dogs and I am trying to be just as great as them."
Lyles, better known as a 200m specialist, holds the joint-quickest time of the year in that event, running 19.69 last month.
"Don't get me wrong. I love the 200. I love it," he said. "But I also like a few 100s in the mix."
Olympic 100m champion Elaine Thompson put an injury-hit start to the season behind her to win the Jamaican championships title.
The 25-year-old beat three-time world champion Shelly-Ann Fraser-Pryce into second place, while Olympic 400m bronze medallist Shericka Jackson finished third.