World and Olympic champion Jeremy Wariner was left at the starting line as Angelo Taylor won the 400m at the British Grand Prix in Sheffield.
Wariner stumbled from the blocks in torrential rain
Wariner stumbled from his blocks at the start and stopped running.
South African Paralympian Oscar Pistorius struggled in the wet and finished last and was then disqualified for running out of his lane.
Earlier, American Tyson Gay overcame the weather to claim a hard-fought victory in the 100m.
Gay, who clocked 9.84 seconds last month - the fastest time in the world this year - triumphed in 10.13.
The American had to battle hard over the second half of the race before powering clear.
"I don't think my body was ready to run fast yet because I've not done any speed work for three weeks," Gay said.
"Having to go from the gun, my muscles weren't really warmed up properly."
Britain's Marlon Devonish put in another good performance to finish second in 10.23.
Earlier, Devonish had finished fifth in the 200m behind American Wallace Spearmon, who won in 20.08.
Spearmon, the 2005 world silver medallist, edged out Jamaican Usain Bolt by one hundredth of a second with another American Rodney Martin third in 20.39 with Devonish managing 20.45.
In the women's race, Allyson Felix beat compatriot Sanya Richards to win in 22.35 with Richards clocking 22.44 and Jamaica's Veronica Campbell third.
Felix made a slow start but got into her stride on the bend and looked strong on the home straight to claim victory.
Ethiopian Kenenisa Bekele blew away the challenge of his arch-rival Craig Mottram to win the 3000m in a UK all-comers' record and personal best time of seven minutes 26.69 seconds.
Bekele powered away with two laps remaining, lowering the previous mark achieved by his fellow countryman Haile Gebrselasie who clocked 7:29.69 at Crystal Palace eight years ago.
He finished over eight seconds clear of the Australian, whose time of 7:35.00 was a season's best.
Andy Baddeley achieved the best victory of his career when he won the 1500m in a personal best time of three minute 34.74 seconds.
The Briton, who was third in last month's Oslo 'Dream Mile', beat the 2004 Olympic bronze and silver medallists Rui Silva and Bernard Lagat.
The reigning AAA champion said: "I wasn't really thinking about the time. I can only do my best and I still feel like I'm learning.
"I was still with the leader at the last 200m and I knew that if I went with
100m to go that no-one would catch me."
European indoor champion Nicola Sanders set a season's best to beat Monique Hennagan in the 400m.
Hennagan looked strong on the bend but Sanders, who has been struggling with an Achilles problem, dug deep in the final 30 metres to win in 51.01.
"I finished sixth in Lausanne the other night but this time I was more controlled and came through strong and it's a season's best so I'm pleased," she told BBC Sport.
"I've missed five or six weeks of training and I want to get some hard sessions done so I can run fast before Osaka."