![Mats Wilander of Sweden in action against Switzerland's Heinz Gunthardt on the Centre Court at Wimbledon Stock Photo - Alamy Mats Wilander of Sweden in action against Switzerland's Heinz Gunthardt on the Centre Court at Wimbledon Stock Photo - Alamy](https://c8.alamy.com/comp/G644AE/mats-wilander-of-sweden-in-action-against-switzerlands-heinz-gunthardt-G644AE.jpg)
Mats Wilander of Sweden in action against Switzerland's Heinz Gunthardt on the Centre Court at Wimbledon Stock Photo - Alamy
![Heinz Gunthardt believes Roger Federer will make a comeback after third knee surgery, says Swiss played "great" tennis this year Heinz Gunthardt believes Roger Federer will make a comeback after third knee surgery, says Swiss played "great" tennis this year](https://staticg.sportskeeda.com/editor/2021/08/f8deb-16291962859610.jpg)
Heinz Gunthardt believes Roger Federer will make a comeback after third knee surgery, says Swiss played "great" tennis this year
![File:Tennis finale heren enkel Gunthardt tegen Taroczy Melkhuisje Hilversum Gunthar, Bestanddeelnr 931-6048.jpg - Wikimedia Commons File:Tennis finale heren enkel Gunthardt tegen Taroczy Melkhuisje Hilversum Gunthar, Bestanddeelnr 931-6048.jpg - Wikimedia Commons](https://upload.wikimedia.org/wikipedia/commons/d/d1/Tennis_finale_heren_enkel_Gunthardt_tegen_Taroczy_Melkhuisje_Hilversum_Gunthar%2C_Bestanddeelnr_931-6048.jpg)