July 13 (Reuters) - Masters champion Danny Willet and former U.S. Open winner Justin Rose will represent Great Britain in next month's Rio Games, the British Olympic Association announced on Wednesday. World number nine Willet and 11th ranked Rose will compete in the Aug. 11-14 men's 72-hole stroke play event, which has been hit by several high-profile pullouts citing concerns of the Zika virus. The world's top four male golfers -- Jason Day, Dustin Johnson, Jordan Spieth and Rory McIlroy -- have all withdrawn over health concerns from the mosquito-born virus. ... More...