Jeremy Chardy (Fra) beats Frances Tiafoe (US) 6-4 6-4
Novak Djokovic (Ser) beats Adrian Mannarino (Fra) 7-5 6-1
Top seed Marin Cilic (Cro) beats Sam Querrey (US) 7-6 (7-3) 6-2
Nick Kyrgios (Aus) beats 2017 champion Feliciano Lopez (Spa) 7-6 (7-5) 7-6 (7-3)
Djokovic won 11 of the last 13 games to see off Adrian Mannarino.
And on that note, we're going to end this live text, although stick around for the final men's quarter-final at Queen's.
Thanks for joining us.
Andrew Cotter
BBC commentator at Queen's Club
Djokovic knows how important every win is and he's getting better and better.
He had to work hard in the first set but Mannarino's level dropped and Djokovic cut out a few of the errors he was making.
He's not yet back at his highest level but there's a growing belief that he can get there.
Mannarino 5-7 1-6 Djokovic
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Mannarino 5-7 1-6 Djokovic
Djokovic has yet to drop a set at Queen's.
He'll face either Jeremy Chardy or Frances Tiafoe in the last four.
Mannarino 5-7 1-6 Djokovic
And he was right to!
Novak Djokovic marches on into the Queen's semi-finals.
Djokovic wins match after challenge
Mannarino 5-7 1-5 Djokovic*
Novak Djokovic thinks he's aced his way to victory.
It's called out - but Djokovic challenges...
Mannarino 5-7 1-5 Djokovic*
A serve out wide from Djokovic, and Mannarino's return is wayward.
Match point number two...
Mannarino 5-7 1-5 Djokovic*
Djokovic gets tight, and double faults.
Deuce!
Mannarino 5-7 1-5 Djokovic*
Another error from Mannarino, and Djokovic has a match point.
Mannarino 5-7 1-5 Djokovic*
Scratch that.
Mannarino's forehand goes up and out, and it's deuce.
Mannarino 5-7 1-5 Djokovic*
Mannarino blazes a backhand long before clawing his way to 30-30.
Now then. A bobble off the net falls nicely for Mananarino, and he's got a break back point.
Mannarino 5-7 1-5 Djokovic*
Ah.
That'll be a double break for Novak Djokovic, as Adrian Mannarino whips his forehand into the net.
Djokovic will serve for the set.
*Mannarino 5-7 1-4 Djokovic
Mannarino, under some pressure, coughs up his first double fault of the game.
Oh, and again! 0-30, and it's soon 0-40 as he lashes a return long.
Three break points for Djokovic.
Image source, Getty Images*Mannarino 5-7 1-4 Djokovic
Easy as you like for Novak Djokovic.
He holds to love in relatively speedy time.
Peter Fleming
Seven-time Grand Slam doubles champion on BBC Two
Djokovic is enjoying himself right now. He's in full flow.
He's got the measure of Mannarino.
Mannarino 5-7 1-3 Djokovic*
Another poor return from Mannarino.
Another break point for Djokovic...
And the Serb takes it this time! Down the line he goes, and Mannarino nets the return.
*Mannarino 5-7 1-2 Djokovic
Oh! A total misjudgment from Novak Djokovic, ignoring a Mannarino forehand that plants itself neatly on the line.
Deuce. As you were.
*Mannarino 5-7 1-2 Djokovic
Oops. Mannarino goes cross-court and gets his angles wrong.
Advantage Djokovic...
*Mannarino 5-7 1-2 Djokovic
Deuce!
That's good from Mannarino, giving his shots a bit of extra oomph, and again, Djokovic helps the ball over the baseline.
*Mannarino 5-7 1-2 Djokovic
A mini-rally, and Djokovic blinks first, lashing a return over the baseline.
One more chance for the Serb to break.