Seeded first and third, Daniil Medvedev and Alexander Zverev have been on a roll this week in Cincinnati. World no. 2 and the Toronto champion Daniil Medvedev scored another impressive triumph, beating another former Cincinnati winner Grigor Dimitrov 6-3, 6-3 in an hour and 29 minutes for a place in the quarters.
It was their fourth meeting and the third win for Medvedev, all during the North American summer swing. Daniil saved three out of four break chances and stole the rival's serve four times from ten opportunities to seal the deal and sail into the next round.
The Russian tamed his strokes more efficiently and had the upper hand in the shortest and more advanced exchanges. Grigor wasted three break chances in the opening two return games and got broken at 15 in game four to fall 3-1 down.
The Bulgarian pulled the break back with a backhand down the line winner a few minutes later before Daniil broke him again to remain ahead.
Daniil Medvedev and Alexander Zverev are in the quarter-final in Cincinnati.
Medvedev closed the opening set with an ace in game nine and waited for his chances on the return in set number two.
It came at 3-3 when Grigor sprayed a forehand error, and it was all over when the Bulgarian hit a double fault at 3-5 to propel the rival through. Alexander Zverev came to Cincinnati with no wins at this event in the previous six years.
The German has changed that with a victory over Lloyd Harris in the second round, and he is now through to the last eight following a 6-2, 6-3 triumph over Guido Pella in an hour and 13 minutes. The Olympic gold medal winner dropped eight points behind the initial shot and never faced trouble in his games.
Pella was miles away from that pace, struggling in the shortest and more advanced exchanges and getting broken four times. Zverev broke at 15 in the opening game and held at love to cement the advantage. The german forged a 5-2 lead with a forehand down the line winner and held at 15 with another forehand winner to wrap up the opener.
Alexander produced two breaks in set number two and sealed the deal in style to preserve energy for the upcoming matches. Felix Auger-Aliassime toppled the 5th seed Matteo Berrettini for his second Masters 1000 quarter-final, failing to reach the last four in 14 events before Cincinnati!
The Canadian lost serve once and had control on the return, scoring three breaks to seal the deal in just over an hour and a half.