SYDNEY (Reuters) - Australia and the United States will revive the bilateral Duel in the Pool contest after a gap of 15 years in Sydney in August, Swimming Australia announced on Wednesday. The rivalry between the swimming powerhouses was revived at the Tokyo Olympics last year, where a resurgent Australia ran the United States close in the final medal tally. Titmus edged that race in dramatic fashion to claim one of nine gold medals Australia won in Tokyo, only two behind the American haul of 11. The third and last "Duel in the Pool" between the United States and Australia was contested in Sydney 2007, although the Americans later took on a team from Europe in four further editions. The original idea aimed to cash in on the rivalry between the countries at the 2000 Sydney Olympics, where Australia famously handed the United States men's team their first defeat in the 4x100m relay at a Summer Games.