![Australian Open 2014: Maria Sharapova battles through three-and-a-half hour epic to beat Karin Knapp in second round | The Independent | The Independent Australian Open 2014: Maria Sharapova battles through three-and-a-half hour epic to beat Karin Knapp in second round | The Independent | The Independent](https://static.independent.co.uk/s3fs-public/thumbnails/image/2014/01/16/08/Maria-Sharapova.jpg)
Australian Open 2014: Maria Sharapova battles through three-and-a-half hour epic to beat Karin Knapp in second round | The Independent | The Independent
![Patty Schnyder of Switzerland reacts after beating Italy's Karin Knapp, during their third round match of the French Open tennis tournament, at the Roland Garros stadium, in Paris, Saturday, June 2, 2007. Patty Schnyder of Switzerland reacts after beating Italy's Karin Knapp, during their third round match of the French Open tennis tournament, at the Roland Garros stadium, in Paris, Saturday, June 2, 2007.](https://c8.alamy.com/comp/2NG4K62/patty-schnyder-of-switzerland-reacts-after-beating-italys-karin-knapp-during-their-third-round-match-of-the-french-open-tennis-tournament-at-the-roland-garros-stadium-in-paris-saturday-june-2-2007-schnyder-won-6-1-4-6-7-5-ap-photomichel-spingler-2NG4K62.jpg)
Patty Schnyder of Switzerland reacts after beating Italy's Karin Knapp, during their third round match of the French Open tennis tournament, at the Roland Garros stadium, in Paris, Saturday, June 2, 2007.
![Australian Open 2014: Maria Sharapova outlasts heat and Karin Knapp in three and a half hours at sweltering Aussie Open | Daily Mail Online Australian Open 2014: Maria Sharapova outlasts heat and Karin Knapp in three and a half hours at sweltering Aussie Open | Daily Mail Online](https://i.dailymail.co.uk/i/pix/2014/01/16/article-2540348-1AB2DEC800000578-472_634x501.jpg)
Australian Open 2014: Maria Sharapova outlasts heat and Karin Knapp in three and a half hours at sweltering Aussie Open | Daily Mail Online
![Karin Knapp of Italy returns to Ana Konjuh of Croatia during their women's singles match on day three of the Wimbledon Tennis Championships in London, Wednesday, June 29, 2016. (AP Photo/Ben Curtis Karin Knapp of Italy returns to Ana Konjuh of Croatia during their women's singles match on day three of the Wimbledon Tennis Championships in London, Wednesday, June 29, 2016. (AP Photo/Ben Curtis](https://c8.alamy.com/comp/2MYDH91/karin-knapp-of-italy-returns-to-ana-konjuh-of-croatia-during-their-womens-singles-match-on-day-three-of-the-wimbledon-tennis-championships-in-london-wednesday-june-29-2016-ap-photoben-curtis-2MYDH91.jpg)