Which tennis player won a major tennis championship in singles, Juan Martín del Potro or Bob Bryan?
Juan Martín del Potro Juan Martín del Potro (] , born 23 September 1988), also known as Delpo is an Argentinian professional tennis player who is currently ranked world No. 24 in men's singles by the Association of Tennis Professionals (ATP). His biggest achievement has been winning the 2009 US Open, defeating Rafael Nadal in the semifinal and 5-time defending champion Roger Federer in the final. He was the first to defeat both Federer and Nadal during the same major and was the only man outside the Big Four to win a major between the 2005 French Open and the 2013 US Open, a span of 35 tournaments. He is also the second Argentine and the fifth-youngest man to win the US Open in the Open Era. Other career highlights include winning the bronze medal in men's singles at the 2012 London Olympics and the silver medal at the 2016 Rio Olympics and being part of his country's successful Davis Cup team; but his career has also been hampered by a succession of wrist injuries.
Donald Johnson Donald James "Don" Johnson (born September 9, 1968) is a former professional tennis player from the United States who reached the World No. 1 doubles ranking in 2002. Although born in Bethlehem, Pennsylvania, he was raised and learned the sport of tennis in the Pittsburgh suburb of Mt. Lebanon, Pennsylvania. Johnson attended Fairview High School in Erie, Pennsylvania, and won the PIAA State Singles Championship in 1984. During his career, he won the Wimbledon men's doubles title in 2001 (partnering Jared Palmer), and the Wimbledon mixed doubles title in 2000 (partnering Kimberly Po). He also won the doubles title at the Tennis Masters Cup in 2000 (partnering Piet Norval). He won a total of 23 top-level doubles titles.