Key questions for the Australian Open men's semifinals: Sinner vs. Shelton, and Djokovic vs. Zverev
MELBOURNE, Australia — If it seems as if there’s always something going on with Novak Djokovic at Grand Slam tournaments, that’s because there usually is. Even Djokovic himself acknowledged as much as he prepared to face Alexander Zverev in the Australian Open semifinals Friday after taking painkillers for a hurt left leg.