U.S bag 3 more golds as World Championships draw to close

Sprint hurdler Nia Ali led a final day gold rush for the United States as the curtain came down on the World Championships.

Nia powered to victory in the 100 metres hurdles to upset world record holder Keni Harrison with a time of 12.34sec at the Khalifa Stadium on Sunday.

"I've been training really hard, especially coming back from having my kids," said 30-year-old mother-of-two Nia, who was accompanied by both of her children on her lap of honour.

"These ladies have been raising the bar all year so I knew what I had to do."

Nia's win was one of three final day gold medals for the USA, who finished on top of the medal table with 14 golds, 11 silver and four bronze.

Kenya, meanwhile, finished in second spot with five golds, two silvers and four bronze.

The final day's action drew a line under 10 days of competition at the championships, held in the Middle East for the first time.