Anna-Lena Grönefeld (also spelled Groenefeld; born 4 June 1985) is a German retired professional tennis player. Competing as a professional from 2003 until 2019, she won one singles title on the WTA Tour, at the 2006 Mexican Open, and reached the quarterfinals of the 2006 French Open. She is a two-time Grand Slam champion in mixed doubles, having won the 2009 Wimbledon Championships alongside Mark Knowles, and the 2014 French Open with Jean-Julien Rojer. Grönefeld also finished runner-up in mixed doubles at the 2016 Wimbledon Championships and 2017 French Open. In women's doubles, Grönefeld won 17 WTA Titles, most notably the 2005 Rogers Cup with Martina Navratilova, and reached seven Grand Slam semifinals. She was part of the German team which reached the final of the 2014 Davis Cup, and competed at the 2012 and 2016 Olympic Games. Career 2002–2006: Breakthrough In 2002, she was the singles champion of both the Belgium and Frankfurt International Championships and a finalist at the Orange Bowl. In June 2003, she captured the prestigious French Open junior title, becoming the first player from Germany since 1957 to accomplish this feat. In July 2003, she continued her superb form and won the Apple and Eve Newsday Long Island Classic, held in Woodbury, New York. She was also an accomplished doubles player in juniors winning the French Open title and reaching the finals at Wimbledon. As a result of her tennis success in 2003, Grönefeld had achieved the junior world ranking of No. 1 in singles and doubles. She launched her professional career debut under the direction of the USA Academy and Rafael Font de Mora. Grönefeld made her professional breakthrough in 2005, rising 54 places throughout the year. She reached the third round of the Australian Open, French Open and the US Open and played three finals in WTA Tour events throughout the season, including at the Tier II event in Beijing, although failing to win any of them. She also rose into the top 10 in the world in doubles, cementing her position as one of the most promising young doubles players on the tour at the time. In 2006, she represented Germany along with Nicolas Kiefer at the Hopman Cup. She went on to win her first title at the Abierto Mexicano Telcel in Acapulco and completed a career best showing at Roland Garros, by reaching the quarterfinals, where she lost to Justine