Austin Kleba collected two titles at the Olympic Oval, pipping South Korea's Cha Min-kyu to victory in a dramatic men's 500 metres race.

Cha won silver at the Pyeongchang 2018 Winter Olympics, and had to settle for the same medal in Canada after falling 0.01sec short of Kleba's winning 34.82,

Yevgeniy Koshkin of Kazakhstan was third with 34.90.

Kleba then helped the US to gold in the men's team sprint, clocking 1min 20.59sec alongside Brett Perry and Zach Stoppelmoor.

South Korea came second with a 1:22.12 effort from Cha, Jeong Seon-kyo and Park Seong-hyeon, but there was no bronze medal following disqualifications of the Kazakhstani and Canadian teams.

The women's team sprint gold also went to the US as McKenzie Browne, Chrysta Rands and Sarah Warren recorded a time of 1:30.46, beating South Korea's 1:32.12 from Kim Min-ji, Lee Na-hyun and Park Chae-eun.

Canada were some way back in third with a 1:46.26 from Kali Christ, Lindsey Kent and Carolina Hiller.

Earlier in the day, Jamie Jurak comfortably earned gold for the US in the women's 3,000m with her time of 4:15.46.

Laura Hall of Canada was second with 4:20.68, just ahead of Park Chae-eun who finished in 4:20.73.

Ted-Jan Bloemen won the hosts' first gold of the event in the men's 5,000m by more than 10 seconds with his time of 6:12.38, while Kaleb Muller made it a Canadian double on the podium with a 6:23.03.

Kazakhstan's Bakdaulet Sagatov was further back still as 6:31.77 earned him bronze.

The women's 500m featured a new-look podium, with Sagatov's compatriot Yekaterina Aidova clinching a maiden international title in 37.89.

"Now that I’m qualified for the Olympic Games, I love to compete here," Aidova said afterwards.

"It's the fastest ice in the world.

"I set two national records in Salt Lake City [at the World Cup two weeks ago] and I tried to do it again here.

"I did not manage, but I’m really happy with my results, and the medal as well of course.

"It’s an important medal, but I would have like to see more strong international rivals here.

"That would be good for the competition."

Chinese Taipei's Huang Yu-ting and Argentinian Victoria Rodríguez also medalled for the first time at an international event, clocking 38.06 and 38.53 respectively.

The ISU Four Continents Speed Skating Championships continue tomorrow with the men's and women's 1,500m and mass starts races.

This is the second edition of the Four Continents Speed Skating Championships, following the cancellation of last year's tournament over COVID-19 concerns.