Mo makes history

Mo Farah became the first man to win back-to-back world distance doubles when he stormed to 5,000 metres victory at Beijing's Bird's Nest stadium on Saturday.

The Briton, rocked this season by doping allegations against his coach, put the row behind him as he produced a devastating final 80 metres to romp home in 13min 50.38sec.

Kenyan Caleb Ndiku, in 13: 51.75, held on for silver after making a valiant break with 800m to run. Ethiopian Hagos Gebrhiwet took bronze.

The victory for Farah, who won the 10,000m on the opening weekend, seals a unique "triple double" of distance titles at consecutive world championships and the London Olympics.

"Tonight I had to dig deep, it came down to the last 100 metres," said the Somali-born Farah, 32. "I felt a bit tired going through the rounds and coming back again.

"It's difficult as everybody has got great speed and there are a lot of guys capable of winning. They went for it. The important thing was to win the race and I did that!"

Farah's victory gave him an unprecedented seventh successive distance win at world championships and Olympics, stretching back to his 5,000m gold at Daegu in 2011.

Olympic champion Ashton Eaton broke his own world record as he retained his world decathlon title.

The American threw a season's best 63.63 metres in the javelin before clocking four minutes, 17.52 seconds in the 1500m to finish with a new world best total of 9,045 points, eclipsing his previous mark by six points.

Canada's Damian Warner took silver behind Olympic champion Eaton, posting a national record of 8,695 points and German Rico Freimuth the bronze with a personal best of 8,561.

Poland's Piotr Malachowski finally broke through for world discus gold when he threw 67.40 to take the title.

Malachowski, second at two world championships, continued Poland's impressive field performances. Belgium's Philip Milanov claimed silver with a national record of 66.90m.