Grigor Dimitrov and Andrey Rublev made an impressive debut as a doubles team on Tuesday.
The singles stars upset reigning Wimbledon titlists Matthew Ebden and Max Purcell 3-6, 6-2, 10-8 to reach the second round of the National Bank Open Presented by Rogers. It will not get any easier for Dimitrov and Rublev, who will next try to upset second seeds Marcel Granollers and Horacio Zeballos.
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Two-time Roland Garros champions Kevin Krawietz and Andreas Mies survived a stern test from Lukasz Kubot and Stan Wawrinka. The Germans battled through a Match Tie-break 4-6, 6-1, 10-5.
In other doubles action, Rohan Bopanna and Matwe Middelkoop eliminated Karen Khachanov and Denis Shapovalov 7-6(5), 4-6, 10-6. The Indian-Dutch duo will next face the Polish team of Hubert Hurkacz and Jan Zielinski.