Eighth seeded Indo-French team eked out a 6-3 6-7(3) 10-8 win over the fourth seeded Indo-Czech combination.
Bopanna is now seeking his second consecutive Cincinnati final when he and Roger-Vasselin face the Spanish duo of Marcel Granollers and Marc Lopez.
Granollers and Lopez, currently No. 3 in the Emirates ATP Doubles Team Rankings standings, dispatched Poles Mariusz Fyrstenberg and Marcin Matkowski 6-4, 6-2 in the other quarter-final.
PTI
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