By Liana B. Baker July 25 (Reuters) - Golf's return to the Olympics after 112 years may not be as triumphant as many in the sport hoped. The top four players in the men's game -- Jason Day, Dustin Johnson, Jordan Spieth and Rory McIlroy -- have controversially opted to skip the competition. Three of them cited fears of Zika, the mosquito-borne virus spreading rapidly in the Americas, while Spieth blamed more general health concerns. More...