Kei Nishikori of Japan reacts after winning a point in his quarter final match against Marin Cilic of Croatia during the Brisbane International tennis tournament in Brisbane, Australia, Friday, Jan. 3, 2014. (AP Photo/Tertius Pickard)
Kei Nishikori of Japan plays a shot in his quarter final match against Marin Cilic of Croatia during the Brisbane International tennis tournament in Brisbane, Australia, Friday, Jan. 3, 2014. (AP Photo/Tertius Pickard)