August 16 - On a night when the host drew level in the medals table with the United States in terms of golds – with victories in the women's hammer from Tatyana Lysenko and men's long jump by Aleksandr Menkov leaving them on five titles so far – Mo Farah soared even further away from his rivals in his two specialist events as he won the 5,000 metres to complete the double that so narrowly eluded him two years ago.
The Briton has now won five out of the last six global medals at the two distances, only having to settle for silver in the 5,000m at Daegu.
And as so often before, dazzling teeth bared with the effort in the last 50 metres, he eluded them, coming home in a slow and edgy race in 13min 26.98sec.
Silver went to Hagos Gebrhiwot of Ethiopia by just one thousandth of a second after both he and Isiah Koech of Kenya were credited with 13:27.26.
Farah won against a field which never really knew how to draw the sting out of him. Koech and fellow Kenyan Thomas Longosiwa, who finished fourth in 13:27.67, took the pace out for the first couple of laps but were soon reeled in by the pack.
"I thought that the Kenyans would work as a team and might want to box me in," he said.
"But it didn't happen.
"Maybe it was because everybody here was trying to get a medal and nobody wanted to sacrifice themselves to increase the pace.
"I was relieved because I was suffering from a stitch in the early part of the race.
"This double is definitely the sweetest one for me.
"It was tougher than the Olympic one, because last year nobody knew what I was capable of."
Now Farah's thoughts will turn towards his commitment to run the full Virgin London Marathon next year.
Meanwhile, Jamaica's double Olympic 100m champion Shelly-Ann Fraser-Pryce is celebrating her own event shift having added the 200m title to the 100m version she regained earlier in the week.
The Jamaican came home in 22.17sec amid dramatic circumstances as the woman who had won this title four times previously, Olympic champion Allyson Felix, pulled up with a torn right hamstring after 40 metres as - perhaps - she strained to keep up with the fast-starting Jamaican in the lane outside her.
In the absence of Felix, her main challenge came once again from Murielle Ahoure, who had chased her home in the 100m final.
The United States-based Ivory Coast athlete took silver once again, in 22.32, the same time credited to Nigeria's Blessing Okagbare, who took bronze.
"I heard someone scream, but I wasn't sure who it was," said Fraser-Pryce, who was in lane four, one ahead of the American who fell to the track with what looked like a hamstring injury to her right leg.
"When I got into the straight I was expecting to see her come up, but I didn't see her, so I thought it must be her."
Lysenko took the hammer title in a Championship record of 78.80 metres, with Anita Wlodarczyk setting a Polish record of 78.46 for silver.
Menkov achieved 8.56m, the world's best long jump of 2013, to finish ahead of Ignisious Gaisah of the Netherlands, who managed 8.29.
David Storl of Germany retained his world shot put title, although not without controversy as his winning effort of 21.73m was initially disqualified as a foul.
Storl claims he had not left the circle illegally, and photographic evidence supported him.
Event favourite Ryan Whiting of the US said he had "not done it on the night" after achieving a best of 21.57m to take silver ahead of Canada's Dylan Armstrong, with 21.34m.
The 4x400m relay title went to the United States in 2min 58.71sec, the fastest time of the year.
Silver and bronze went to Jamaica and Russia respectively.
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