September 30: Switzerland's Martina Hingis, a former No. 1 player in both singles and doubles, is 32. Hingis won 43 WTA singles titles and 37 in doubles. In singles, she won five Grand Slams, lacking only the French Open for the career Grand Slam. She won the career Slam in doubles in a single season (1998) and took nine women's doubles Slams overall, along with the 2006 Australian mixed doubles title. In 1996, she became the youngest Grand Slam champion ever, winning the Wimbledon doubles title at 15 years, 9 months of age.
October 2: Austria's Thomas Muster, a former No. 1 singles player, is 45. Muster won 44 career ATP singles titles including the 1995 French Open. He was the first Austrian to be ranked No. 1 or in the Top 10. He won 12 titles in 1995, and 40 straight matches on clay in the same season.
Career doubles Grand Slam winner Jana Novotna turns 44. Novotna racked up 12 WTA doubles Grand Slam titles in her career - including four at Wimbledon - of her 76 total doubles crowns. She also won two silver medals in women's doubles (1988 and 1996), four mixed doubles Grand Slams and the 1998 Wimbledon crown. She took the bronze in women's singles at the 1996 Summer Games.
France's Marion Bartoli, currently ranked 10th in the world, turns 28. Bartoli has won seven WTA singles titles and been ranked as high as No. 7 in the world. She reached the finals of Wimbledon in 2007 and the semifinals of the French Open in 2011.
October 5: Germany's Florian Mayer, currently ranked No. 25 in the world, turns 29. Mayer has been ranked as high as No. 18 and has one career titles in singles play. His best Grand Slam finishes to date are quarterfinal appearances at Wimbledon in 2004 and 2012.
American former pro Richey Reneberg is 47. Reneberg won three titles in his career, was ranked as high as No. 20 in the world and reached the fourth round of Wimbledon and the US Open once each.
October 6: Two-time Grand Slam quarterfinalist Byron Black of Zimbabwe is 43. Black reached the quarterfinals of Wimbledon in 2000 and the US Open in 1995, and was ranked as high as No. 22 in the world, winning two career titles. In doubles, he reached the No. 1 ranking in the world in February of 1994 and won 22 titles.
(File Photo: Martina Hingis playing World TeamTennis; Credit: WTT)