Fifth seeds Leander Paes and Nenad Zimonjic recorded their second victory in the Tennis Masters Cup doubles at the Qi Zhong in Shanghai on Tuesday.
The Indo-Serbian pair beat the seventh seeded pair of Wayne Arthurs and Paul Hanley 7-6(3), 7-6(6) in their second match of the tournament.
Top seeds Mike and Bob Bryan recovered after losing their opening match to crush fourth seeds Mark Knowles and Daniel Nestor 6-4, 6-4 in another match on Tuesday.
Paes and Zimonjic had made a winning start to the tournament on Saturday by beating Knowles and Nestor 7-5, 5-7, 6-3.
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