Alistair Cragg has missed out on a place in the final of the 5,000 metres.
As is usual, it was the runners from Ethiopia, namely Dejen Gebermeskel and Yenew Alamirew, who took the top two spots in the heat, with Kenya's Thomas Longosiwa, Bernard Lagat of the USA and Abdalaati Iguider taking the rest of the qualifying spots.
The leader finished with a time of 13:15:15 while Cragg finished 17th in a time of 13 minutes 47.01 seconds.
The Clonliffe Harriers runner maintained a steady pace with the main bunch in the first half of the race which was run at a slow pace at first.
With six laps to go he had fallen behind the leading group, but somehow he strode up to fifth place before the leaders stretched ahead thanks to Australia's Craig Mottram.
The Aussie had Uganda's Moses Kipsiro, Galen Rupp of the USA, Canada's Cameron Levins and Mumin Gala of Uganda for company and it was they who started to drive the leaders on to leave a big gap between them and the Irish runner.
Frome then, there was no way back for Cragg as he eventually failed to catch up and gain a fastest losing spot.