Seeded fourth, Bopanna and Mergea defeated their Brazilian-Argentine opponents 7-6(8), 6-2 to progress to the summit clash of the USD 461,330 hard court tournament in run up to the Australian Open.
Bopanna and Mergea will now face Jamie Murray of Great Britain and Brazil's Bruno Soares in the final. Soares and Murray had defeated Polish pair of Lukasz Kubot and Marcin Matkowski 7-5, 2-6, 10-3 in the other semifinal.
Bopanna is defending champion at this event. He had won the trophy last year with Canadian partner Daniel Nestor.
"Through to r 1st final of 2016,Really happy to be in the final & looking forward to a great match tom, @fmergea @SydneyTennis @ATPWorldTour," Bopanna later tweeted.

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