Postpublished at 16:16 British Summer Time
With that victory Jack Draper will rise to fourth in the world on Monday, meaning he will have a top four seeding for Wimbledon.
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British number one Jack Draper beats Brandon Nakashima 6-4 5-7 6-4 to reach Queen's last four for first time
Top seed Carlos Alcaraz beats Arthur Rinderknech 7-5 6-4 to reach semi-finals
GB's Jacob Fearnley beaten 7-5 6-2 by Jiri Lehecka in last eight
Joe Rindl, Gary Rose and Grace Wheeler
With that victory Jack Draper will rise to fourth in the world on Monday, meaning he will have a top four seeding for Wimbledon.
Kessler 6-3 2-4 Boulter*
Great response from Kessler, holding to 30 after Boulter wallops a forehand long.
Draper writes "SF in London" on the camera lens, plus something else but just looked like a smudgy scribble to me Might have been his name.
*Kessler 6-3 1-4 Boulter
Katie Boulter's in complete control in the second set. She cements her break with a quick hold to 15.
Nakashima is applauded off the court - including by Draper. He played his part in an excellent match.
Andrew Cotter
Commentator on BBC TV
He's done it. With a hard fought win over Nakashima.
Kessler 6-3 1-3 Boulter*
And while Draper's just wrapped up his match, Katie Boulter has broken in the second set.
At deuce McCartney Kessler hits a criminal double fault, and then Boulter gets out of the game with a clutch cross-court backhand into the corner.
Nakashima 4-6 7-5 4-6 Draper
He does!
Draper is through to the semi-finals at Queen's!
What a hard-fought win for the British number one.
Andrew Cotter
Commentator on BBC TV
That was an inch perfect for Draper! Brilliant defence from Nakashima.
Nakashima 4-6 7-5 4-5 Draper*
Draper takes the next point and he has match point.
A big, big roar from the crowd. Will Draper get the job done?
Nakashima 4-6 7-5 4-5 Draper*
A big roar from Draper as Nakashima can only send a return long from a fierce serve.
Deuce.
Nakashima 4-6 7-5 4-5 Draper*
Oooh that looks close but Draper nails the forehand down the line.
One break point saved...
Nakashima 4-6 7-5 4-5 Draper*
A big overhead smash by Nakashima at the net and he has two break points...
Nakashima 4-6 7-5 4-5 Draper*
But a 14th ace of the match has Draper up and running.
Nakashima 4-6 7-5 4-5 Draper*
It isn't going to plan at the moment for Draper as he finds himself 0-30 down on his serve...
Nakashima 4-6 7-5 4-5 Draper*
A change of racquet for Draper as he serves for a place in the semi-finals.
John Lloyd
Former GB Davis Cup captain on BBC TV
That's what he has to do Nakashima. In his head he will be thinking he has done nothing wrong.
Nakashima 4-6 7-5 4-5 Draper*
Nakashima stays in this with the hold, the highlight of that game for the American being a superb forehand into the corner.
He's played well, but Draper has a huge chance to get the job done now.
*Kessler 6-3 1-2 Boulter
In the heat, neither players are fancying getting locked into long rallies. Boulter quickly wraps up her next service game, relying on some strong serves and baseline hitting.
Kessler 6-3 1-1 Boulter*
A standard hold from Kessler, to 15. We stay on serve.