Usain Bolt was sensationally disqualified from the world 100m final yesterday after a catastrophic false start, allowing fellow Jamaican Yohan Blake in to claim gold.

Bolt, the defending champion, Olympic gold medallist and world record holder, rocked off his blocks in horrendous fashion and knew immediately he had made the biggest error possible in the world of sprinting.

Under rules which state that athletes no longer have a second bite of the cherry in the event of one false start, the 24-year-old ripped off his singlet in disgust, and slowly retreated to the starting line, head in hands, to be steered off the track.

With the packed stadium abuzz in disbelief, it took several minutes to calm down.

Blake, a training partner of Bolt under coach Glen Mills, made the most of the clean restart to power through and win in 9.92sec in a muted atmosphere.

American Walter Dix, the Olympic bronze medallist, took silver (10.08sec) and 2003 world champion Kim Collins of St Kitts and Nevis claimed bronze at 0.01.

“I can’t find words to explain it. Usain Bolt has been there for me. I feel like I want to cry,” said Blake.

“I’ve been trained by one of the best coaches but I stayed cool and caught him (Collins). I felt I would win the race for Bolt.”

The omens had been good for Bolt, with three defending champions retaining their titles on the second day of competition.

American Brittney Reese won the women’s long jump and team-mate Trey Hardee the decathlon, while Russian Valeriy Borchin claimed a second consecutive world 20km race walking title.

There was also a first medal for China through Li Yanfeng in the women’s discus, but heartbreak for Ethiopian distance running legend Kenenisa Bekele.

Bekele, bidding for a fifth consecutive 10,000m title, was forced to pull out of the event he has never been beaten in with a groin/hip injury.

That left the door open for British favourite Mo Farah, but Bekele’s team-mates had other plans.

Ibrahim Jeilan produced an amazing home-stretch sprint to trump the Somali-born Farah at the line of an enthralling race.

Farah had made a break shortly before the bell for the final lap, taking Jeilan and bronze medal winner Imane Merga with him. It immediately became apparent that Merga was out of the running, but Jeilan remained as a contender.

Farah clung on until the final bend when Jeilan made his move, the two neck-and-neck before the Ethiopian sped away with a final burst of speed.

Jeilan finished the 25-lap race in 27min 13.81sec, just 0.26sec ahead of a despondent Farah while Merga clocked 27:19.14.

Earlier in the day, Oscar Pistorius made history by becoming the first amputee athlete to compete in World Championships history.

The South African, known as ‘Blade Runner’ because he runs with carbon fibre prosthetic running blades, came third in his 400m heat in 45.39 seconds, qualifying him for today’s semi-final, with a dream final scheduled for tomorrow.

Borg sixth in heat

Diane Borg was again in action in the second round of 100 metres heats yesterday.

On Saturday, Borg finished third in her heat (12.29) to progress but this time she placed sixth when clocking 12.22, 0.33 of a second slower than her national best.

Overall, Borg was classified 43rd from 73 runners.

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