Davies is among the favourites to challenge Olympic 1500m gold medallist Grant Hackett in the pool in Beijing.
BBC: SPORT | Olympics & Olympic sport | Swimming | Davies keen on Olympic 10k event
Former Olympic champion Harrison was scheduled to challenge Sosnowski at London's Alexandra Palace on 9 April.
But the U.S. Open and Olympic champion now looks unlikely to challenge for the title in the French capital.
The organizers have overcome a logistical challenge to ensure the Olympic Flame traveled within an hour of 95% of people in the UK, the Isle of Man, Guernsey and Jersey during the 70-day Torch Relay.
FORBES: The Logistics Of The Olympics Is A Marathon, Not A Sprint
It is not the first time Evangulov has used the term "genius" to describe the schoolboy world champion, but the Russian now believes helping Daley to an Olympic medal is no longer his main challenge.
The challenge has been joined this week at the Olympic trials, where Phelps is off to a smashing start as he seeks to qualify in enough events in order to beat history in Beijing.
ATHENS, Greece -- Japan's Mizuki Noguchi produced a courageous run from the front to win the Olympic women's marathon title as Paula Radcliffe's challenge ended in tears.
"I was approached by GBR Challenge but nothing much looked to be happening, " said the Olympic champion, tipped for gold at Athens in the Finn class.
Ennis's main competition at the Gotzis multi-events meeting, which is part of the IAAF World Combined Events Challenge, is likely to come from the Ukraine's reigning Olympic champion Nataliya Dobrynska and World Indoor pentathlon champion Tatyana Chernova of Russia.
The challenge of securing the Games was made clear the day after the U.K. won its Olympic bid: On July 7, 2005, a series of coordinated suicide bomb attacks in London killed 56 people and injured more than 700.
The 34-year-old knows the terrain well around Varese but will have to fend off the challenge of Oscar Freire and his powerful Spanish squad, which includes Vuelta Espana winner Alberto Contador, Olympic champion Samuel Sanchez and UCI ProTour winner Alejandro Valverde.
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