Andy Murray survived a stifling New York day to reach the fourth round of the US Open but it is two different British players who will take centre stage tonight.
Murray admitted he struggled with his breathing in very humid conditions as he defeated Germany's Florian Mayer 7-6 (7/2) 6-2 6-2.
The defending champion made a sluggish start but never looked in any real trouble, aside from coping with the energy-sapping humidity.
Murray said: ''It was tough conditions. It was very, very humid. With the way that he plays, it was a tough match, especially the beginning.
''But I started the second set well. I started hitting the ball a little bit cleaner, was more aggressive after that, and finished it well.
''I was struggling breathing for most of the match.''
The Scot will face Uzbekistan's Denis Istomin tomorrow for a place in the quarter-finals, but other British interest has not ended with the exit on Saturday of Dan Evans.
Tonight, Colin Fleming and Jonny Marray will take on all-conquering twins Bob and Mike Bryan in the quarter-finals of the men's doubles in the night session on Arthur Ashe.
It will be a first grand slam quarter-final together for the Anglo-Scottish pair and a rare opportunity to play on the main court at a major.
Marray, of course, has experience of that on Wimbledon's Centre Court from his stunning run to the title with Dane Freddie Nielsen last year.
They beat the Bryans in the semi-finals, and the Yorkshireman has his sights set on a repeat.
Marray said: "We can't wait. To get the opportunity to play out there, not many people get that, especially against the Bryans as well.
"Obviously it can do nothing but give me some confidence knowing that I've been in a big match against them at a grand slam and come through with a win.
"It's on their turf this time but I'm sure it'll be a great occasion for both of us and hopefully we'll go out and play some good tennis."
At 35, the Bryans have had the best year of their career and are bidding for a calendar Grand Slam.
Fleming added: "Hopefully we can ruin their dream year. That's obviously our aim. But all credit to them, they're an amazing team and it's an amazing year and careers they've had so far."
Jamie Murray is also through to the quarter-finals after he and Australian partner John Peers defeated Americans Rajeev Ram and Brian Baker in a deciding tie-break.
In the most eagerly-anticipated match of the US Open so far, Serena Williams avenged her Australian Open defeat by beating young pretender Sloane Stephens.
Third seed Agnieszka Radwanska crashed out, though, losing to Russia's Ekaterina Makarova, while men's top seed Novak Djokovic crushed Joao Sousa.
Later today, second seed Victoria Azarenka and former world number one Ana Ivanovic clash while the men's fourth round begins with Roger Federer meeting Evans' conqueror Tommy Robredo and Rafael Nadal facing Philipp Kohlschreiber.
Why are you making commenting on The Herald only available to subscribers?
It should have been a safe space for informed debate, somewhere for readers to discuss issues around the biggest stories of the day, but all too often the below the line comments on most websites have become bogged down by off-topic discussions and abuse.
heraldscotland.com is tackling this problem by allowing only subscribers to comment.
We are doing this to improve the experience for our loyal readers and we believe it will reduce the ability of trolls and troublemakers, who occasionally find their way onto our site, to abuse our journalists and readers. We also hope it will help the comments section fulfil its promise as a part of Scotland's conversation with itself.
We are lucky at The Herald. We are read by an informed, educated readership who can add their knowledge and insights to our stories.
That is invaluable.
We are making the subscriber-only change to support our valued readers, who tell us they don't want the site cluttered up with irrelevant comments, untruths and abuse.
In the past, the journalist’s job was to collect and distribute information to the audience. Technology means that readers can shape a discussion. We look forward to hearing from you on heraldscotland.com
Comments & Moderation
Readers’ comments: You are personally liable for the content of any comments you upload to this website, so please act responsibly. We do not pre-moderate or monitor readers’ comments appearing on our websites, but we do post-moderate in response to complaints we receive or otherwise when a potential problem comes to our attention. You can make a complaint by using the ‘report this post’ link . We may then apply our discretion under the user terms to amend or delete comments.
Post moderation is undertaken full-time 9am-6pm on weekdays, and on a part-time basis outwith those hours.
Read the rules hereComments are closed on this article