In 1988, Edberg reached the first of three consecutive finals at Wimbledon, but lost his ranking as Sweden's number-one-player when Mats Wilander had his best year by winning the Australian, French and US Opens, becoming the world's number-one-ranked player. In all three of his consecutive Wimbledon finals, Edberg played German Boris Becker in what became one of Wimbledon's greatest rivalries. Edberg won their first encounter in a four-set match spread over two days because of rain delays. A year later, Becker won in straight sets. The closest of their matches came in the 1990 final, when Edberg won in five sets after being down a break in the fifth set.