March 30 - Australia’s Samantha Stosur, the 2011 US Open champion, and former No.1 in women’s doubles, turns 30. Stosur has fallen to 43rd in the rankings. She defeated Serena Williams to win the 2011 US Open title. She was No.1 in the world in women’s doubles for 61 weeks, winning the 2006 French Open and the 2005 US Open,as well as the 2005 Australian Open and 2008 Wimbledon mixed doubles titles.

March 31 - Former World No.1 in doubles Kelly Jones turns 50. He won eight doubles titles and reached two Grand Slam finals.

April 1 - Former No.4 Magdalena Maleeva turns 39. The Bulgarian won 10 singles titles in her career and reached the quarterfinals of the US Open in 1992.

April 2 - Australia’s Todd Woodbridge, one of the most illustrious doubles players in ATP history, turns 43. Woodbridge won 16 men’s doubles and seven mixed doubles Grand Slam titles in his career, winning the career Slam in both, and the golden Slam in men’s doubles, adding the 1996 gold medal at the Atlanta Summer Olympics. He won 83 career men’s doubles titles, including Wimbledon nine times.

Spain’s David Ferrer, 2013 French Open finalist, turns 32. Ferrer has won 21 career titles and is currently ranked No. 6 in the world, having been as high as No. 3 in 2013.

April 3 - Germany’s Tommy Haas, former No. 2 and current No. 13, turns 36. Haas has reached the semifinals of four Grand Slam tournaments and has won 15 titles, as well as the silver medal at the 2000 Summer Olympics.