best say injuries have accounted for the withdrawal of olympic eight hundred metre gold medal is david rudisha and reigning one hundred meter champion your home blake whose absence along with those of gay and powell mean six time olympic champion you saying bolt is the overwhelming favorite to clinch at least one sprint gold yet while full houses are expected at top disciplines like the man's one hundred and two hundred meters finals overall examines remains the biggest issue but the organizers say ticket sales are high and interest in media access to the championships stretches worldwide we have already a record number of rights holders networks all over the world and more than two hundred well which will be broadcasting this event that should indicate to us that we are really well positioned to beat the five billion viewers mark that would that was that of twenty. at those last championships in south korea russia finished second overall behind the u.s. with nine gold medals equalling their best to have a result this time russia's head coach predicts and more this. six gold yet the squad incl