#3 Ivan Lendl - 94
Ivan Lendl is a retired Czech and American tennis player. He won the boys' singles title at the French Open and Wimbledon in 1978 and was ranked number one junior player. He turned professional in 1978 and has won 94 singles titles and six doubles titles during his career. He has also won eight Grand Slams which consists of three French Opens, two US Opens and two Australian Opens.
He retired in 1994 and in 2001 he was inducted into the International Tennis Hall of Fame. In 2018 he joined Alexander Zverev's team as a coach.
#2 Roger Federer - 100
Roger Federer is currently ranked world number seven by the ATP and is the 2nd player in the Open Era to win 100 ATP singles titles. He won his 100th title by beating Stefanos Tsitsipas at the Dubai Duty Free Tennis Championship.
He also has 20 Grand Slams to his name, the most by any male player. He won has six Australian Open, eight Wimbledons, five US Opens and one French Open. Federer also holds the record of being ranked number one in the world by ATP for 310 weeks, which includes consecutively for 237 weeks.