Mats Wilander

Mats Wilander (Swedish pronunciation: [ˈmats viˈlandər]; born 22 August 1964) is a former World No. 1 tennis player from Sweden. From 1982 to 1988, he won seven Grand Slam singles titles (three at the French Open, three at the Australian Open, and one at the US Open), and one Grand Slam men's doubles title (at Wimbledon).

In 1988, Wilander won three of the four Grand Slam singles events and finished that year ranked World No. 1. Although he never won the singles title at Wimbledon, Wilander twice won the Australian Open when that tournament was still played on grass courts. This makes Wilander one of only five men (along with Jimmy Connors, Andre Agassi, Rafael Nadal, and Roger Federer) to have won Grand Slam singles titles on grass courts, hard courts, and clay courts. He and Rafael Nadal are the only men in tennis history to have won at least two Grand Slam singles titles on each of the three surfaces (2 Australian when it was played on grass prior to 1988, 1 Australian and 1 US on hard and 3 French on clay).