Top seeds Sania and her Brazilian partner Bruno Soares edged past Abigail Spears and Santiago Gonzalez 7-5 6-7 (3) 10-8 before seventh seeds Paes and Martina Hingis outplayed the Spanish combine of Anabel Medina Garrigues and Pablo Andujar 6-3 6-1 on Show Court 3.
The US-Mexican pair of Spears and Gonzalez gave a bit of a hard time to Sania and Soares but the experienced pair handled the pressure well to seal the match in a tense super tie-break.
There were also cheers for India in the junior boys singles section as Sumit Nagal humbled Yosuke Watanuki of Japan 6-2 6-3 in the second round encounter.