Novak Djokovic, Alexander Zverev to clash in Olympics semis

Novak Djokovic breezed past Kei Nishikori of Japan 6-2, 6-0 on Thursday to move into the semifinals of the Tokyo Olympics.

The No. 1 seed in the tournament, Djokovic, of Serbia, needed just 72 minutes to defeat Nishikori behind three aces and five service breaks. And he had a message for No. 4 Alexander Zverev of Germany, his opponent in the semifinal.

"Matches are not getting easier, but my level of tennis is getting b