Djokovic's blister could be a game-changer against Sinner

Novak Djokovic faces a blistering challenge in his Australian Open semifinal against Jannik Sinner! Kim Clijsters is worried that this pesky blister on Djokovic's foot might slow him down. The match is on January 30 at the Rod Laver Arena, and Djokovic knows he must bring his A-game since he’s lost to Sinner in their last five showdowns. Can he turn the tide this time?