August 12: American ATP legend Pete Sampras turns 41. Sampras won 14 Grand Slam singles titles in his career, the second-most in history. He is tied for the most wins at Wimbledon (seven) and the US Open (five) in the Open Era, and was ranked No. 1 to end the season every year from 1993-1998. He won 64 career ATP singles titles.
Croatia's Iva Majoli turns 35. Majoli won the 1997 French Open crown, upsetting Martina Hingis and ending her 37-match win streak. Majoli played 13 seasons in total, winning eight tiles on the WTA circuit.
August 14: Taiwanese ATP player Yen-Hsun Lu turns 29. Currently ranked No. 70 in the world, Lu is most famous for his 2010 upset of No. 5 Andy Roddick in the fourth round at Wimbedon, which led him to become the first Taiwanese player to reach a Grand Slam quarterfinals.
Sweden's Robin Soderling turns 28. Soderling is a former Top 4 player who reached the finals of the French Open in 2009 and 2010. He is the only player to date to have defeated Rafael Nadal and Roland Garros. After spending a few seasons ranked in the Top 10, Soderling's prolonged bout with mononucelosis has seen him off the court for more than a year, and he is currently unranked because of the long time off.
August 16: American legend Tony Trabert turns 82. Trabert won five singles and five doubles Grand Slams in his career, including winning both crowns simultaenously at the French Open in 1954 and 1955. He is one of only four male players to win the French Open, Wimbledon and the US Open in the same season.
Argentina's Jose Luis Clerc turns 54. Clerc won 25 career titles and peaked at No. 4 in August of 1981. He also helped Argentina to the 1981 Davis Cup final. American Jimmy Arias turns 48. Arias won five career titles and peaked at No. 5 in April of 1984.
August 17: Argentina's Guillermo Vilas turns 60. Vilas has the longest winning streak in ATP history - 46 matches - which he set in 1977. He won both the French Open and the US Open in 1977, and added the Australian Open titles in 1978 and 1979. He won 62 ATP titles overall as well as 16 doubles titles. American former No. 1 Jim Courier turns 42. Courier wont he French Open in 1991 and 1992, and the Australian Open in 1992 and 1993.