Usain Bolt of Jamaica, the world's fastest man and defending champion, was dramatically expelled from the men's 100m final for a false start at the World Athletics Championships on Sunday night, which took the fully-packed Daegu Stadium and the world by a big surprise.

Usain Bolt of Jamaica reacts after being disqualified for a false start in the men's 100 metres final at the IAAF 2011 World Championship in Daegu, August 28, 2011. (Xinhua/Liao Yujie)
The men's 100m final took place at 1145 GMT on Sunday. Bolt and his two compatriots Yohan Blake and Nesta Carter as well as the other five sprinters entered the 66,422-seat stadium amid thunderous cheers and applause.

After about five minutes of warmup, Bolt took to Lane 5 of the blue track and was ready to storm ahead.

Then an unexpected scene occurred. Bolt falsely commenced his start before the starting gun was fired. He sprinted away several meters and took off his jersey, obviously realizing that he would be disqualified.

With a face of pain and regret, Bolt was out, marking a dramatic ending to his ambition to snatch another sprint double in the 100m and 200m, after his legendary wins in Berlin two years ago.

At the Berlin World Championships, Bolt created the world records in the 100m and 200m, 9.58 and 19.19 seconds, respectively.

VietNamNet/Xinhuanet