DES MOINES, Iowa -- Keni Harrison cruised to her fourth consecutive victory in the 100-meter hurdles on Saturday at the Drake Relays, joining Lolo Jones as the only women in meet history to do so.

Harrison crossed in a wind-aided 12.65 seconds on a miserable day at Drake Stadium, where temperatures plunged into the high 30s with a steady rain and a wind chill that made it feel below freezing at times.

Jasmine Camacho-Quinn, Harrison's training partner, was second at 12.85. Canadian Phylicia George was third at 12.96.

The weather wasn't the only challenge faced, as a pair of false starts threatened to sap the hurdlers of their momentum. But it didn't hamper Harrison, the world-record holder at 12.20.

"I just had to refocus," Harrison said of the restarts. "I didn't feel my best, but sometimes you have to go out and just get the job done."

The men's 110 hurdles produced a mild upset, as Kentucky junior Daniel Roberts held off 2016 Olympic champion Omar McLeod by one one-hundredth of a second for the win in a wind-aided race.

Roberts won in 13.28 to become the first college athlete to win the event since it was added to Drake's schedule in 2002.

"I knew he was going to be there. I know he's very fast. So I had to just get out, focus on my lane," Roberts said of McLeod. "I tell myself all the time that I'm the best hurdler in the world because that's where I want to be one day."

In the women's 400 hurdles, American Kori Carter, the 2017 world champion, won in her first appearance in the event in nearly two years. She finished at 56.07, the eighth-fastest time in the world so far this season.

Ashley Spencer, who won bronze in the event at the 2016 Rio Games, was third at 57.02.

Amina Smith, thanks in part to the unfavorable conditions, was the only athlete in the women's high jump to clear 6 feet. She is ranked fifth in the world.

Reigning Olympic champion Ryan Crouser won the shot put with a put of 69 feet, 3½ inches.

The men's pole vault, which was moved indoors because of the weather, had an upset winner with defending NCAA champion Chris Nilsen edging reigning USA Track & Field winner Sam Hendricks, who had won his two previous starts at Drake.

It was Nilsen's first win in five head-to-head tries against Hendricks.