Noah Lyles and Julien Alfred shine with dominant wins at the Diamond League Final in Zurich

Olympic champions Noah Lyles and Julien Alfred showcased their credentials with commanding victories at the Diamond League Final in Zurich on Thursday, just two weeks before the World Championships in Tokyo.

Lyles, the American sprint star, became the first track athlete to capture six Diamond League Final titles after edging Botswana's Letsile Tebogo in a dramatic 200m showdown. The three-time world champion trailed off the bend but powered home to stop the clock at 19.74 seconds, a slender 0.02 ahead.

"Six in a row, the most in track!" Lyles said. "It's pretty nice to have that. I saw Letsile lean on the finish line and I leaned too, but I knew I had it."

Tebogo, who stunned Lyles in Paris to deny him Olympic gold, suggested the American has taken a more measured approach since that defeat.

"You have to let the legs do the talking," Tebogo said. "I think now Lyles is humble. He wins today, but tomorrow he can lose. Since Paris, he hasn't been talking so much."

In the women's 100m, St Lucia's Alfred returned from injury with an emphatic run of 10.76 in her first outing for more than a month. The Olympic champion showed no sign of rust, finishing clear of Jamaica's Tia Clayton (10.84) and Britain's Dina Asher-Smith (10.94).

"I'm moving past the questions about my injuries," Alfred said. "It's my first race back in five weeks, so this is one step forward. I feel fitter and mentally stronger than earlier in the season, and I want to add another gold to my collection."

Elsewhere, Germany's Julian Weber produced two throws in excess of 91 metres to win the men's javelin, finishing more than six metres clear of Olympic and world champion Neeraj Chopra.

American Christian Coleman took the men's 100m in 9.97, pipping South Africa's Akani Simbine (9.98) and Jamaica's Ackeem Blake (9.99). "This victory feels amazing. Let's keep winning," Coleman said, with his sights set on Tokyo.

Brittany Brown of the United States claimed the women's 200m in a season's best 22.13, with Asher-Smith (22.18) second and Marie-Jose Ta Lou-Smith (22.31) third.

Norwegian Karsten Warholm delivered a meet record of 46.70 in the men's 400m hurdles, while Dutch star Femke Bol lowered the Zurich mark to 52.18 in the women's event.

Dutch prospect Niels Laros produced a national record of 3:29.20 to win the men's 1500m, while Olympic champion Emmanuel Wanyonyi of Kenya edged Britain's Max Burgin and Canada's Marco Arop to secure the men's 800m.

Athletes reached Zurich after competing in 14 Diamond League meetings, with the final winners receiving a diamond-shaped trophy and a $50,000 prize.