![Novak Djokovic of Serbia reacts after losing a point against Roger Federer of Switzerland during their semi-final match at the Rogers Cup tennis tournament in Toronto August 14, 2010. REUTERS/Mike Cassese (CANADA - Novak Djokovic of Serbia reacts after losing a point against Roger Federer of Switzerland during their semi-final match at the Rogers Cup tennis tournament in Toronto August 14, 2010. REUTERS/Mike Cassese (CANADA -](https://c8.alamy.com/comp/2E6DWW7/novak-djokovic-of-serbia-reacts-after-losing-a-point-against-roger-federer-of-switzerland-during-their-semi-final-match-at-the-rogers-cup-tennis-tournament-in-toronto-august-14-2010-reutersmike-cassese-canada-tags-sport-tennis-images-of-the-day-2E6DWW7.jpg)
Novak Djokovic of Serbia reacts after losing a point against Roger Federer of Switzerland during their semi-final match at the Rogers Cup tennis tournament in Toronto August 14, 2010. REUTERS/Mike Cassese (CANADA -
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3,019 Rogers Cup Presented By National Bank Day 4 Photos and Premium High Res Pictures - Getty Images
![Canada's Vasek Pospisil celebrates a point against John Isner, of the United States, at the Rogers Cup tennis tournament Wednesday, Aug. 12, 2015, in Montreal. (Paul Chiasson/The Canadian Press via AP Stock Canada's Vasek Pospisil celebrates a point against John Isner, of the United States, at the Rogers Cup tennis tournament Wednesday, Aug. 12, 2015, in Montreal. (Paul Chiasson/The Canadian Press via AP Stock](https://c8.alamy.com/comp/2P2J70K/canadas-vasek-pospisil-celebrates-a-point-against-john-isner-of-the-united-states-at-the-rogers-cup-tennis-tournament-wednesday-aug-12-2015-in-montreal-paul-chiassonthe-canadian-press-via-ap-2P2J70K.jpg)