Japan Open: Karatsev into quarter-finals, defeats Zhang

Russian Aslan Karatsev beat Chinese Zhizhen Zhang 6-3, 6-4 to move into the last eight of the Japan Open at the Ariake Colosseum in Tokyo on Thursday afternoon.

Karatsev, ranked No 50, will play Australian Alex de Minaur, the No 4 seed, next.

The Russian won against American Frances Tiafoe, the No 6 seed (6-3, 7-6 (4)) ahead of his victory.

In the previous round of the Tokyo Open, Zhang, ranked No 57, edged out Pole Hubert Hurkacz (3-6, 6-4, 7-6 (4)).

Tokyo ATP500, other second-round results (Ariake Colosseum, hard, USD 2.013.940, most recent results first):

• Shintaro Mochizuki (WC) beat Taylor Fritz (1): 0-6, 6-4, 7-6 (2)
• Alex De Minaur beat Diego Schwartzman: 6-0, 7-5
• Alexei Popyrin beat Cristian Garin (Q): 4-6, 7-6 (3), 6-2
• Ben Shelton beat Jordan Thompson: 6-7 (5), 6-4, 6-3
• Marcos Giron (Q) beat Casper Ruud (2): 6-3, 6-4
• Tommy Paul (5) beat Mackenzie McDonald: 6-4, 6-2
• Felix Auger-Aliassime (8) beat Sebastian Ofner: 6-4, 6-1