Andy Murray set up a meeting with fellow Briton Cameron Norrie after a gutsy win over fellow veteran Stan Wawrinka in the Cincinnati Open.
Former world number one Murray, 35, won 7-6 (7-3) 5-7 7-5 in the first-round match against his 37-year-old rival.
The victory keeps alive world number 47 Murray's hopes of being seeded at the US Open, which starts on 29 August.
Now the Scot will play Norrie after the British number one won 7-6 (7-5) 4-6 6-4 against Denmark's Holger Rune.
Veterans show their fight in absorbing contest
Murray and Wawrinka were the two players who most regularly challenged the dominance of Roger Federer, Rafael Nadal and Novak Djokovic at the top of the men's game in the 2010s, leading to three Grand Slam triumphs apiece and long stretches inside the world's top five.