Mumbai, February 7 (ANI): Ace Indian tennis star Leander Paes, who recently won the 2012 Australian Open doubles title, now eyes a gold medal at the London Olympics and clinching upcoming Grand Slam titles. Interacting with mediapersons on the sidelines of an event in Mumbai, Paes said he would be training hard for the tournament ahead. Paes completed a career Grand Slam after winning the Australian Open doubles title with his Czech partner Radek Stepanek at Melbourne Park recently.