Prakash Amritraj advanced to the singles pre-quarterfinals of the $50,000 ATP Challenger event in Calabasas in US when his opponent retired mid-way in the first round.
Leander Paes yet again turned the clock back in company of Rohan Bopanna as the Indian duo recorded a dramatic come-from-behind 1-6, 6-7(4), 6-3, 6-3, 8-6 win over Serbian pair of Nenad Zimonjic and Ilija Bozoljac to keep home team's chances alive in the Davis Cup World Group play-off tie in Bangalore on Saturday
