MELBOURNE (Reuters) - List of leading men's grand slam singles title winners after Roger Federer beat Rafa Nadal in the Australian Open. These are records for Grand Slam tournaments, also known as majors, which are the four most prestigious tennis events. All records are based on official data Most singles titles and · Most same gender · Most mixed doubles titles. This article details the list of men's singles Grand Slam tournaments tennis champions. (Winners of all four Grand Slam singles tournaments in the same calendar year) . Concord Encyclopedia; Jump up ^ CBS Sports ""; Jump up ^ Top End Sports ""; Jump up ^ USA Today Tennis ""; Jump up ^ Tennis 28 Slams "" Grand Slam · Rod Laver · Roy Emerson · Lists of tennis records and.