Sania Mirza taught Mamta Banerjee Tennis during exhibition match

India's tennis queen Sania Mirza taught West Bengal chief minister Mamata Banerjee how to play the forehand cross-court during an exhibition match in Kolkata on Wednesday.The West Bengal chief minister was one of the first to congratulate Sania when she won the Wimbledon doubles crown with Martina Hingis in July this year.