WIMBLEDON - Indian tennis players Rohan Bopanna and Sania Mirza entered the men's and women's doubles quarter-finals, while Leander Paes was knocked out in the men's doubles of the Wimbledon Championships here on Monday. Bopanna with his Romanian partner Florin Mergea earned a hard fought victory against the Polish-Belarusian pair of Lukasz Kubot and Max Mirnyi 7-6(4), 6-7(5), 7-6(5),