Tennis players celebrating birthdays the week of March 23-29.

March 23 - Sweden's Jonas Bjorkman, former No. 1 in doubles, turns 42. Bjorkman won nine Grand Slams in men's doubles, completing the career Grand Slam in 2005 when he took the French Open for the first of two times. He won 54 doubles titles in all and was ranked No. 1 for the first time in July of 2001. In singles play, he reached the semifinal of two Grand Slams, won six titles and reached No. 4 in the world in November of 1997.

American Bethanie Mattek-Sands, the 2012 Australian Open mixed doubles champion, turn 29. Mattek-Sands has been ranked as high as 30th in women's singles and 11th in women's doubles. She has 12 WTA doubles titles to date, and has reached at least the quarterfinals of all four Grand Slams in women's doubles. In 2012, she teamed up with Romania's Horia Tecau to win the Australian Open over Elena Vesnina and Leander Paes.

March 26 - Australia's Rennae Stubbs, former No. 1 women's doubles player, turns 43. Stubbs won 60 doubles titles including four Grand Slams, missing out on the career feat by only reaching the finals of the French Open. She also won two mixed doubles Grand Slams.

March 28 - Switzerland's Stanislas Wawrinka, currently ranked No. 3 in the world, turns 29. In January of 2014, Wawrinka won the Australian Open, his first Grand Slam title, making him the first man since Juan Martin Del Potro at the 2009 US Open outside of the "Big Four" - Roger Federer, Rafael Nadal, Andy Murray and Novak Djokovic  - to win a men's singles Grand Slam.

March 29 - Argentina's Juan Monaco, former world No. 10, turns 30. Monaco has won eight ATP titles but has never made it past the fourth round of a Grand Slam tournament. He reached the 2008 semifinals of the US Open in men's doubles.

American Jennifer Capriati, former world No. 1 who won three Grand Slam titles and a gold medal, turns 38.  Capriati was 13 years old when she debuted in 1990 and reached the Top 10 at age 14 years, 235 days. She defeated Steffi Graf for the gold medal at the 1992 Olympics in Barcelona before taking a 14-month break from tennis that included off the court legal troubles. She returned to win three Slams - the Australian Open in 2001 and 2003 and the French Open in 2001. She ultimately won 14 career singles titles and was inducted into the International Tennis Hall of Fame in 2012.