American teenage sensation Erriyon Knighton broke Usain Bolt’s 17-year-old U20 200m world record on Saturday (June 26) at the USA Olympic trials at Hayward Field in Eugene, Oregon. It was a day when Grant Holloway came within touching distance of the 110m hurdles world record and four women ran under 22 seconds in the 200m, one of those times, the third-fastest in history.

The 17-year-old Knighton ran down World Champion Noah Lyles to clock 19.88 easing down to obliterate Bolt’s 19.93 set in Bermuda in 2004. It was the second Bolt record he broke as just last month, he ran 20.11 to break Bolt’s U18 world record of 20.13.

He looks set to run even faster in today’s final.

Meantime, Lyles ran 19.91 for second place but was third fastest overall, heading into the finals. Kenny Bednarek won his semifinal in 19.90 and Isiah Young 19.99 to set up what is expected to be an epic clash. Fred Kerley ran 20.08 to qualify as one of the fastest losers.

Andrew Hudson and Terrence Laird are also into the final after running times of 20.02 and 20.22, respectively.

Allyson Felix’s bid to qualify for a second event at the Olympics ended in spectacular fashion. In what was her last race ever at a US trials, Felix finished fifth in 22.11 in a race where the first four women past the post all ran under 22 seconds.

Gabby Thomas was the winner with a lifetime best, meet record and world-leading 21.61, the third fastest time in history.

Jenna Prandini ran a new personal best of 21.89 while Anavia Battle ran a personal-best 21.95 for third place. Tamara Clarke was fourth in 21.98.

The men’s 110m hurdles was won by World Champion Grant Holloway, who qualified for his first Olympics running 12.96 to finish ahead of Devon Allen, who clocked 13.10 for second place. Daniel Roberts will also be in Tokyo having run 13.11 for third place.

Despite the fast time, the final was kind of anti-climactic after Holloway sped to 12.81 seconds to win his semi-final. The time was 0.01 off the world record of 12.80 set by Aries Merritt in September 2012.

There was almost another world record in the final of the 400m hurdles where Rai Benjamin stormed to 46.83, the second-fastest time in history and just 0.05 seconds off the world record of 46.78 set by Kevin Young at the Barcelona Olympics in 1992.

Dalilah Mohammad’s less than two-year-old world record of 52.16 could be under threat today as Sydney McLaughlin looked very at ease running 53.03 to win her semi-final easing down over the last 30 metres of her race.

Mohammad, meanwhile, had to be content with second place in her semi-final in which she ran 53.86. The much-improved Shamier Little ran 53.71 to win the heat and set the stage for an epic clash between her, McLaughlin and Mohammad.