Martina Navratilova age 34, Navratilova defeated Graf the last time they played in a major in the semifinals of the 1991 US Open 7–6(2), 6–7(6), 6–4, to end their Grand Slam rivalry 5-4 up. It is worthy to note that all 4 of Graf's Grand Slam victories over Navratilova came in the finals of a Slam. This is reflected in the Grand Slams Finals chart below. Navratilova's final major singles triumph was in 1990. In the final, the 33-year-old Navratilova swept Zina Garrison 6–4, 6–1 to claim an all-time record ninth Wimbledon singles crown. Though that was her last major singles title,
Martina Navratilova where she lost a third set tiebreak to Tracy Austin. Navratilova won both Wimbledon and the French Open in 1982. After adopting basketball player Nancy Lieberman's exercise plan and using Yonex isometric midsize graphite-fiberglass composite racquets, Navratilova became the most dominant player in women's tennis. After losing in the fourth round of the first major event of 1983, the French Open, she captured the year's three remaining major titles (the Australian Open was held in December at that time). Navratilova's loss at the French Open was her only singles defeat during that year, during which she established an 86–1 record.