Fourth seed Daniil Medvedev booked his spot in the third round of the Cincinnati Open with a 6-4 7-5 win over Marco Trungelliti, but Casper Ruud had to retire injured.

Medvedev's difficult year continued when he suffered a second-round Canadian Open exit against Botic van de Zandschulp earlier this month, but there was no repeat in Ohio.

The Russian was a straight-sets victor on Sunday, though his win did not come without difficulty as he required one hour and 47 minutes to get over the line.

A lone break in game nine handed Medvedev the opening set, but it looked as though the former US Open champion might be taken to a decider when he dropped the first three games of the second.

Trungelliti went 5-2 up, but a spectacular collapse from the Argentine allowed Medvedev to get it done in two sets as he won five straight games. He will face Brandon Nakashima or Aleksandar Kovacevic in round three.

But Ruud will not be present in the next round after he retired from his match against Christopher O'Connell at a set down.

The Norwegian received treatment on an upper body issue before calling it quits, which will be a concern with the US Open beginning in two weeks.

Keep hitting those milestones, @DaniilMedwed 

The 2019 champion becomes the sixth active player to record 100 ATP Masters 1000 wins on hard courts, defeating Trungelliti 6-4, 7-5! @CincyTennis | #CincyTennis pic.twitter.com/ET3C3o0Tt3

— ATP Tour (@atptour) August 16, 2026

Medvedev brings up hard-court century

Medvedev's season has hardly been a roaring success, as he has failed to go beyond the fourth round at any of the first three grand slams of 2026.

But he has quietly amassed a good record on hard courts, with this being his 20th win on the surface this year – no other player on the ATP Tour has more.

Sunday's victory was also Medvedev's 100th ATP Masters 1000 triumph on hard courts overall, becoming the sixth active player to achieve that feat after Novak Djokovic, Gael Monfils, Alexander Zverev, Grigor Dimitrov and Stan Wawrinka.

And, having only needed 145 matches to bring up that century, Medvedev is the fastest player to achieve it since 2013, when Andy Murray reached his century in his 132nd such match at Indian Wells. Each of the next seven men to achieve 100 wins on the surface did so in 150 matches or more.