Papa Djokovic hails super-mom Serena

FILE PHOTO: Serbia's Novak Djokovic and Serena Williams of the U.S. laugh as they carry their trophies as they arrive for the official draw ceremony at Melbourne Park, Australia, January 15, 2016. REUTERS/David Gray

PARIS (Reuters) - With his daughter Tara born a day after Serena Williams gave birth to her first child Alexis Olympia last September, Novak Djokovic has been trading parenting tips with the American.

However, when he was asked if it's easier to be a tennis-playing father than a continent-hopping mother on the professional tour, the Serb's jaw appeared to hit the floor.