Which tennis player won a major tennis championship in singles, Juan Martín del Potro or Bob Bryan?
Bob Bryan Robert Charles Bryan (born April 29, 1978) is an American male professional tennis player. He has won twenty-three Grand Slam titles: 16 in men's doubles and 7 in mixed doubles. He turned professional in 1998. With his twin brother Mike, he has been world No. 1 doubles player for much of the last several years, first achieving the top ranking in September 2003. The brothers were named ATP Team of the Decade for 2000–2009. The brothers became the second men's doubles team to complete the career golden slam at the 2012 Summer Olympics.
Raúl Ramírez Raúl Ramírez (born 20 June 1953) is a retired Mexican professional tennis player. He was active during the 1970s and 1980s, and is regarded as one of the great all-around players of the modern era. Ramírez was also the first player to finish first in both singles and doubles Grand Prix point standings, accomplishing the feat in 1976. He attended and played tennis at the University of Southern California in Los Angeles.