European 200m champion Adam Gemili became the first sub 10sec and sub 20sec British sprinter with or without wind assistance at the Bedford International Games on Sunday.
The 21-year-old smashed through the 10 seconds barrier for the 100m with a stunning 9.97secs.
A 3.7 m per second following wind rendered his run wind-assisted and invalid for record purposes, but it still a momentous effort by the East London University student.
The Commonwealth 100m silver medallist had already produced the legal performance of the meeting, having clocked the fastest time in the first series of 100m races in 10.12secs (+1.3).
Sale Harrier Andrew Robertson finished runner-up to Gemili in a windy 10.19 in the fastest of the second series of 100m race.
Runner-up to him in the quickest of the first series was the emerging Ojie Odoburun as the 18-year-old clocked 10.25secs, a season’s best and 2015 European junior lead.
Also mixing it in the open 100m races was 2012 Paralympic T44 100m champion Jonnie Peacock.
In his first outings of the season, the Charnwood sprinter finished second in one of the second series of 100m races in 10.80secs (+2.4) and seventh in one of the first series in 10.99secs (+1.8).
In the women’s 100m, former world youth champion Asha Philip maintained her impressive early season form, running a blistering but wind assisted 11.17secs (+3.2).
European and Commonwealth 200m silver medallist Jodie Williams opened her outdoor season with a victory in the second of two women’s 400m races, clocking 53.51secs.
The first race was quicker, 17-year-old Manx athlete Catherine Reid making a major improvement on her PB, from 54.86secs to 53.34secs.
The men’s 400m was won by Nigel Levine in 46.61secs.
On the comeback trail, 400m hurdler Jack Green was a clear winner in 50.39secs, ahead of Richard Yates, who was runner-up in 52.37secs.
There was an encouraging seasonal improvement, and a victory, from 2012 Olympic high jump bronze medallist Robbie Grabarz on only his second appearance since returning.
A second time clearance at 2.24m represented a notable improvement on the 2.16m he jumped at the Drake Relays in the US in April – and secured him a win ahead of training partner Chris Kandu, who finished second with 2.20m.
Grabarz had three attempts and three failures at 2.28m, the A standard for August’s World Championships in Beijing.
Commonwealth silver medallist Isobel Pooley won the women’s high jump with 1.91m, equalling her meeting record.
Elsewhere in the field, there were wins in the triple jump for 2006 European silver medallist Nathan Douglas, with 16.55m (+2.2); in the hammer for Commonwealth bronze medallist Mark Dry, with 71.83m; and in the shot for Rachel Wallader, with a PB and 2015 UK lead of 17.17m.
Peacock was not the only Paralympic star on show as Aled Davies threw 50.63m in the discus.
Sophie Hahn won the Para Elite 100m in 12.82secs (+2.3) and the 200m in 27.20secs (+0.8) from Olivia Breen, who was second in 28.27.
To view June Essex’s picture gallery from the event, click the link above.