By Angeliki Koutantou ATHENS (Reuters) - Former Greek Prime Minister Alexis Tsipras played down fears on Sunday that a snap election in two weeks would produce a fractured result, saying there were enough undecided voters to produce a clear winner on the day. Tsipras resigned last month to make way for the election, hoping to secure a new mandate for a tough austerity programme he agreed in exchange for an 86 billion euro bailout with the cash-starved country's creditors. "There is 15-20 percent of undecided voters right now.