LONDON, Feb. 18 (Xinhua) -- British sprinter James Dasaolu has had to pull out of next month's IAAF World Indoor Championships in Sopot, Poland, confirmed on Tuesday.
Dasaolu has not recovered sufficiently from the hamstring injury he suffered in winning the final at the Sainsbury's Indoor Grand Prix in Birmingham on Saturday, according to British Athletics.
Dasaolu heads this year's world rankings with 6.47sec, his time in the semi-finals at Birmingham's National Indoor Arena, where he recorded 6.50sec to win the final.
"Unfortunately it will keep me out of competing at the World Indoors," said Dasaolu, who last year won a silver medal at the European Indoor Championships in Gothenburg and became the fourth Briton to break through the 10-second barrier for the 100m when he clocked 9.91sec.
"I am disappointed but this is going to be a big year and I don't want to take any risk at all. I will now concentrate on being 100% fit for the outdoor competitions."
The IAAF World Indoor Championships will be held from March 7 to 9.