Steffi Graf in a tight third set that included a 16-minute long, 13-deuce game on Sanchez Vicario's serve at 5-5. In August Monica Seles made her much anticipated return to tennis at the Canadian Open. It was decided to grant her a joint number one ranking with Graf who took her first loss of the year in the first round to Amanda Coetzer. The US Open was Monica Seles's first Grand Slam event since the 1993 attack, with much anticipation again around a potential Seles-Graf final. After surviving a scare in a three-setter against Amanda Coetzer in the first round, Graf reached
Steffi Graf treatment. In the final, Navratilova led 6–3, 4–2 before Graf rallied to win 3–6, 7–5, 6–1 for her third Grand Slam singles title of the year. Victories at Zurich and Brighton preceded the Virginia Slims Championships, where Graf cemented her top-ranked status by beating Navratilova in the final in four sets. Graf ended 1989 with an 86–2 match record and the loss of only twelve sets. Her .977 winning percentage is the second-highest in the open era behind Navratilova. Graf defeated Mary Joe Fernández in the final of the Australian Open, which was her eighth Grand Slam singles title in