David Oliver has claimed that he is content with his form this year as he prepares to defend his 110m hurdles world title in Beijing.

Injury forced the American to miss much of last year after triumphing in Moscow in 2013, but he is confident of proving his quality on the biggest stage once again when he takes on the likes of Pascal Martinot-Lagarde and world-record holder Aries Merritt.

"I feel my chances are great, running back until 12 or 13 seconds," Oliver told reporters. "Running pretty consistent times, I'm pretty sure in the top 10 fastest times this year, my name is up there a few times. That's all I can do is handle business in my lane when it comes to running rounds.

"I know I'm fit. I'm healthy; I'm strong; I'm ready to rock. We'll just see Wednesday, Thursday and Friday, and I will hopefully produce some fireworks on Friday evening and hope to run 12 seconds in this stadium and be the gold medallist again."

The heats begin on Wednesday before the semi-final and final follow over the next two days.