No sprint medal for Kenny

Olympic champion Jason Kenny suffered a quarter-final defeat in the men's sprint as his Track Cycling World Championships came to a premature end on day four in Minsk.

Kenny, who won the men's keirin on day three, was untroubled in advancing to the last eight, but lost his quarter-final with Sam Webster of New Zealand 2-0.

The 24-year-old from Bolton was seeking to add the world title after claiming his first on the bike on Friday.

His 2011 sprint win was awarded retrospectively after Gregory Bauge was stripped of the gold medal for an anti-doping infringement.

Frenchman Bauge, world champion in three of the last four years, was absent at the Minsk Arena, but the depth of the field was still strong.

And Kenny, perhaps fatigued by his keirin exertions, was eliminated from the medal contests.

In the men's omnium, Jon Dibben finished eighth overall, after a dramatic finale which saw Aaron Gate of New Zealand claim gold.

Dibben clocked one minute 05.141 seconds in the sixth and final discipline, the one-kilometre time-trial, to place 12th.

Overall victory was claimed by Gate with a total of 18 points. He triumphed after winning the final discipline in 1min 02.271secs, but only after defending champion Glenn O'Shea of Australia was granted a second opportunity to ride.

O'Shea had a mechanical in the original heat and was given a restart, but could only clock 1:03.625 to place fifth in the kilo and third overall on 22 points. Olympic champion Lasse Norman Hansen of Denmark was second on 21 points after placing second in the kilo in 1:02.437.