Mo Farah defends 10k title on World Athletics day one

Men’s 100m Gold medal contenders Usain Bolt (9.96) and Justin Gatlin (fastest at 9.83) won their heats, and were two of eight athletes under 10 seconds in this opening round.

British duo Richard Kilty and CJ Ujah join the big names in the semi-finals, but James Dasaolu missed out on a faster losers’ spot by a tenth of a second.

The medals in this blue ribband event will be decided on Sunday with the semis taking place earlier in the day. Bolt (6/5) trails Gatlin (odds-on at 4/6) in the betting for Gold, and it’s 7/1 that a new world record is set.

Some hurdling heavyweights crashed out in men’s 400m heats over the obstacles, as defending world champion Jehue Gordon of Trinidad and Tobago an 2005 winner Bershawn Jackson (USA) both slumped to early exits.

Impressive Kenyan athlete Nicholas Bett is now the 3/1 favourite to wrestle this Gold medal away from the Americas to Africa.

Over double that distance on the flat, Botswana’s Commonwealth champion Nijel Amos remains a narrow 2/1 favourite to follow up that success in Glasgow last summer with another Gold in Beijing.

Defending 800m champion Mohammed Aman is a big price to follow Farah’s example and get another world gold at 11/1.

World record holder and Olympic champion David Rudisha is 10/3 to get one over his rival after also coming through his heat with ease.

Ethiopia’s Genzebe Dibaba is strongly odds-on to take the women’s 1500m title after an impressive first round run.