Two of the day's other three gold medals were also won by reigning Olympic champions.

Russia's Olga Kaniskina, who braved heavy rain last year in Beijing, became the first woman in history to retain walk titles at the worlds in front of the historic Brandenburg Gate.

Olive Loughnane of Ireland surprised all to win the silver with China's Liu Hong making up for the frustration of finishing four that last summer's Olympic Games by taking the bronze.

New Zealand's Valerie Vili, also Olympic champion and title holder, had her global domination of women's shot put continued.

Vili finished with 20.44 meters, comfortably ahead of silver medallist, German Nadine Kleinert, who threw a career best 20.20m,and China's bronze medallist Gong Lijao, who managed a personal best of 19.89m.

Jessica Ennis made up for her disappointment for missing last year's Olympic Games due to injury. She led all the way to win Britain's first ever heptathlon gold at the World Championships.

Ennis collected 6,731 points, 238 clear of Germany's Jennifer Oeser. Kamila Chudzik of Poland was third with Olympic champion Nataliya Dobrynska in fourth.

"It's been the longest two days of my life but the best," Ennis said. "I can't believe it. I'm the world champion, I feel like crying.

"I've dreamt so many times about winning medals and becoming world champion, doing a lap of honor. It's the best feeling in the world. It's amazing."

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