The U.S. depth in the 100m hurdles was evident in a sweep at a Diamond League meet in Oslo on Thursday.
Brianna Rollins, Dawn Harper-Nelson and Jasmin Stowers took the top three spots, but it’s likely at least one of them will not make the Olympic team.
That’s because of Keni Harrison, who wasn’t in Oslo but ran the second-fastest 100m hurdles of all time at the Pre Classic on May 28. Harrison clocked 12.24 seconds in Eugene, Ore., two weeks ago and owns the world’s four fastest times this year.
The top three in the Olympic Trials final on July 8 will make the Rio team.
The 2013 World champion Rollins, ranked No. 2 in the world this year, won in Oslo in 12.56 seconds into a slight headwind. Harper-Nelson, who finished first and second at the last two Olympics, was second in 12.75 in Oslo, followed by Stowers in 12.79.
Olympic champion Sally Pearson of Australia was last in 13.14 as she continues to return from a yearlong injury layoff.
Also in Oslo, Canadian Andre De Grasse won the 100m in 10.07 seconds with a small tailwind behind him. De Grasse, 21, shared bronze at the 2015 World Championships in a personal-best 9.92 seconds but hasn’t been close to that form early this season.
“Next should be definitely a sub-10 seconds,” De Grasse said, according to the IAAF.
De Grasse beat a field in Oslo that didn’t include his Worlds podium mates Usain Bolt, Justin Gatlin and Trayvon Bromell.
Instead, the Canadian surged past a hobbled, 40-year-old Kim Collins for the victory. Collins, the 2003 World champion, grimaced as he limped across the finish line with a left groin cramp, according to his social media.
Dutch World champion Dafne Schippers won the women’s 200m in 21.93 seconds, the fastest time in the world this year. Schippers, a former heptathlete, is expected to challenge U.S. Olympic champion Allyson Felix for gold in Rio.
World silver medalist Elaine Thompson of Jamaica was a distant second to Schippers in Oslo in 22.64.
World 1500m champion Asbel Kiprop of Kenya remained undefeated in 1500m or mile races since May 30, 2015, winning a mile event in 3:51.48, .56 ahead of countryman and World 1500m silver medalist Elijah Manangoi. Olympic 1500m champion Taoufik Makhloufi of Algeria was third in 3:52.24.
In the 400m hurdles, surprise World champion Nicholas Bett of Kenya finished sixth, continuing a slow early season. Bett became the first Kenyan Olympic or World champion in a race shorter than 800m last year, when he also struggled early in the season.
U.S. Olympic team contenders Michael Tinsley and Kerron Clement were third and fourth behind Turkish winner Yasmani Copello.
World champion Joe Kovacs won the shot put with a 22.01-meter throw against a field that did not include top rival David Storl of Germany.
Olympic champion Renaud Lavillenie cleared 5.80 meters to win the pole vault over World champion Shawn Barber of Canada, who cleared 5.73.
The Diamond League continues in Stockholm next Thursday, the final meet of the series before the U.S. Olympic Trials that begin July 1.
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