New York: Novak Djokovic admits his slump-busting Wimbledon victory came as a relief, but now that he's a father of two it's not tennis that determines whether he's happy or not. "There is a lot more happening in my life than tennis only," the 13-time Grand Slam winner said after reaching the quarter-finals of the US Open on Monday.

Tennis star Novak Djokovic with son Stefan and daughter Tara