Porugal's Ribeiro was given a score of 9.0 or higher for three tricks in the men's final, giving him enough points to relegate 2019 SLS champion and four-time world champion Nyjah Huston to second place.

American Huston scored 27.2 points, whereas Ribeiro - a bronze medallist at the 2019 World Championships - was given 27.6 at Utah State Fairpark.

Another Californian, Alex Midler, took bronze with 25.4 points and Brazil's Tokyo 2020 silver medallist Kelvin Hoefler was fourth.

Ribeiro's final trick - a 360-flip nose blunt - was the highest-scoring effort of the day, worth 9.4 points.

"This is a dream - never stop dreaming," Ribeiro, who has battled a should injury this year, said afterwards. 

"It’s all about perseverance. 

"Because if you practice, train and never stop believing in yourself, anything is possible."

In the women's event, 13-year-old Leal amassed 21.0 points - 0.3 more than the Japanese skater she finished one place ahead of at the Olympics, Funa Nakayama.

A score of 8.5 for the Brazilian's concluding kickflip frontside boardslide proved decisive.

The Netherland's Roos Zwetsloot completed the podium.

SLS earlier this week announced new broadcast deals with YouTube, DAZN, MCS and Fox Sports, with Globo in Brazil and ProSieben in Germany, Austria and Switzerland returning.

DAZN is showing all three of the series' two-day events in Japan, Spain and Italy, with MCS in France and Fox Sports in Australia doing the same.