Querrey, of course, did what he had to and more, striking 27 aces and 70 winners, though Murray's impaired movement inflated those numbers.
American tennis is in the midst of an epic drought, where the United States' top players can't compete against the world's best.
Sensing that Murray's injury, illness and poor form-blighted season was finally catching up with him, Querrey sent the champion scampering all over the court. All seemed comfortable for Murray until, at 5-4, the home favourite lapsed and allowed Querrey back in.
Serving at break point down, Murray exchanges backhands with the Yank, then switches play across the baseline.
"I was pretty close". "The whole tournament I've been a little bit sore". But then, when I broke back in the second (set), I kind of took a deep breath, settled in a little bit. I'm proud about that.
NASCAR driver Aric Almirola plans to return to action this weekend at New Hampshire Motor Speedway after missing two months with a fractured vertebra. "There's obviously an opportunity there, so I'm sad that it's over", he added.
Querrey's path to the Finals won't get any easier - he'll play the winner of Marin Cilic (7) and Gilles Muller (16) next. Querrey has dropped all four of his previous matches against Cilic, while Federer is 18-6 versus Berdych.
BENT double, face contorted, racquet planted on the turf as a makeshift crutch.
From 1-all in the fourth, Querrey grabbed eight games in a row to take that set and lead 3-0 in the last.
Even with his hip problem, Murray had baffled observers and opponents alike by walking with a slight limp but running as if nothing were wrong.
"Yes. First male player". "These other guys are all big hitters".
That's because this wasn't just some tossed-off remark from the world's number one player, looking to score a few social media points for being a #wokebae.
The fans, despite the disappointing result, still applauded Querrey for his achievement. I'll get the best advice I can and stick with that.
So special that no British woman has managed it since Virginia Wade in 1978. It was just.an incredible match. Now I'm really happy.
Asked about Britain's women's singles semi-finalist Johanna Konta, who is aiming for her first grand slam title, Murray said: "Hopefully she goes on to win". Konta's only previous match at this stage of a Grand Slam tournament was a semifinal loss at the 2016 Australian Open.
Murray, meanwhile, has been dealing with that hip.
"It was only getting worse", said Djokovic, explaining his elbow was in the most pain when he hit serves and forehands.