Usain Bolt has admitted that he is "worried" about his fitness levels for the 200m at the World Athletics Championships.
Bolt is looking to claim a fourth consecutive World Championships gold over the distance, but only qualified as the joint-13th fastest having eased up on the way to victory in his heats.
USA's Justin Gatlin is again expected to be Bolt's main rival for gold in the event, but the Jamaican is hopeful that his technical ability will see him claim a 10th world title.
"The 200m means a lot more to me but I'm a little worried about my fitness because I've not done many this year, but I think I am a better technical runner in this event," he told BBC Radio 5 live.
"I am tired and a little sore but I'm going to take another ice bath and I'll be okay."
Bolt has already won the 100m title at this year's Championships, edging out Gatlin by one-hundredth of a second in Sunday's final.
