was held on Court Philippe Chatrier to honour Ana Ivanovic. Equipment and endorsements Ivanovic endorsed Nike apparel and shoes at the beginning of her professional career, but at the beginning of 2006 switched to rival Adidas. Ivanovic then signed a lifetime contract with the company. Ivanovic became an Ambassador for Adidas once she retired from competitive tennis. She is believed to be the youngest athlete, male or female, to sign a contract of such longevity. She started with the Wilson racquets, eventually using the painted H22. From the beginning of 2008 to the end of her career, Ivanovic used Yonex racquets. She previously used the RQiS 1 Tour XL 95, but at the beginning of the Western and Southern Financial Group Women's Open 2010 in Cincinnati switched to a prototype version of a new Yonex racket. Ivanovic played with the Yonex EZONE AI 98 model tennis racquet. In 2008, Ivanovic signed an endorsement deal with Rolex. Playing style Ivanovic was an offensive baseliner with an aggressive style of play. After winning the 2008 French Open and becoming No. 1, Ivanovic endured a decline in form. Many critics attributed this to lack of confidence. At the 2010 Australian Open, Hall of Famer Martina Navratilova commented that, "while she has absolutely no confidence in herself, she still fights till the last point." She since made some improvements to her playing style after appointing a new coach in 2010. As a result, she started to play with more confidence and won matches more consistently. Serve She hit a serve at the French Open in 2007, the fifth fastest serve of all time on the WTA Tour. However, from 2009 to 2012, her service game was largely viewed as a liability instead of a weapon. This was because of her inconsistent ball tosses which were directly associated with her diminishing confidence. Nonetheless, in 2013, under the tutelage of Nigel Sears, her ball tosses became more consistent, allowing her to build her game on her powerful first serves. Groundstrokes Ivanovic's flat and powerful forehand was her bread-and-butter shot that took the world by storm in 2007–08, propelling her to the top of the rankings. However, her backhand was a much weaker wing and was often targeted by players acquainted with Ivanovic's playing style. Her cross-court backhand generally lacked the depth required to throw her opponents off course. While Ivanovic's movement and net play were once