July 23: American Donald Young turns 23. Touted by John McEnroe as a promising player at age 10, Young began showing some of that promise by reaching the fourth round at the 2011 US Open. He is currently ranked No. 57 in the world, and has been ranked as high as No. 38.

Former Yugoslavian doubles No. 1 player Slobodan Zivonjinovic turns 49. In 1986, he teamed with Andres Gomez to win the US Open men's doubles titles, attaining the No. 1 ranking the next day. He won eight career doubles titles and two in men's singles.

July 24: International Tennis Hall of Fame member Gianni Clerici turns 82. He is msot famous for his commentary alongside partner Rino Tommasi on television. He is also a former player who competed at Wimbledon in 1953. He was elected into the Hall of Fame in 2006.

July 27: Five-time Grand Slam doubles winner Dennis Ralston turns 70. A collegiate star at the University of Southern Calirfornia, he combined with Chuck McKinley to win the men's double title at the US Open in 1961-1963, won Wimbledon in 1960 with Rafael Osuna and the French Open in 1966 with Clark Graebner. He also reached the Wimbledon final in men's singles in 1966.

Two-time British mixed doubles Grand Slam champion Joe Durie turns 52. Durie reached No. 5 in the world in signles with two career titles, reaching at least the quarterfinals of all four Grand Slam events at least once. In 1987, she teamed with Jeremy Bates to win the Wimbledon mixed doubles title, and made good on the pairing again to take the 1991 Australian Open crown with Bates.