Flavio Cobolli holds serve and then dives towards his bag for another racquet to prepare for a fresh batch of tennis balls being unloaded from their cans.

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And there's the break back!

An inside out forehand from Felix Auger-Aliassime goes wide.

The serve-and-volley doesn't work for Felix Auger-Aliassime at 30-30.

Break point for Flavio Cobolli to break straight back.

Felix Auger-Aliassime gets the first break of the second set.

Flavio Cobolli goes long at the end of a lengthy rally.

Auger-Aliassime's level has gone up a notch in the past couple of games.

Felix Auger-Aliassime steps up the pace to earn two break points.

Another hold of serve by Felix Auger-Aliassime for a 2-1 lead in the second set.

Auger-Aliassime, seeded fourth, is the highest-ranked player remaining in his half of the men's singles draw.

A swift hold to 15 by Flavio Cobolli, who is one of three Italians in the quarter-finals of the men's singles - it's the first time in Grand Slam history that three men from Italy have got to this stage of a major.

He's never got to a Grand Slam semi-final before.

Felix Auger-Aliassime, after winning the first set, gets on the board first in the second.

A superb forehand winner by Felix Auger-Aliassime takes us back to deuce.

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Felix Auger-Aliassime was broken in the opening game of the first set and a repeat looks unlikely in the second, but then from 40-15 up, he's taken to deuce.

Flavio Cobolli fires a backhand winner down the line to earn a break point.

OK, so the roof is being closed on Court Philippe Chatrier between the first and second sets.

Doesn't look like it's raining now and I'm not sure if it's expected imminently.

Either way, it will make the conditions a lot more predictable. The wind really caused some havoc for both players in the first set.

British duo Alfie Hewett and Gordon Reid are through to the semi-finals of the men's wheelchair doubles - they beat Frederic Cattaneo and Daniel Rodrigues of France and Brazil respectively 6-0 6-2.

Hewett and Reid have won the past six doubles titles at Roland Garros and are the top seeds this time around.

Hewett made it through to the last eight of the singles yesterday but Reid was knocked out by defending champion Tokito Oda.

Felix Auger-Aliassime gets the return in play on break point and Flavio Cobolli goes long.

First set to the Canadian in this quarter-final on a blustery Court Philippe Chatrier.

Flavio Cobolli is a couple of inches away from the perfect passing shot down the line, but it's just out - another set point for Felix Auger-Aliassime.

An excellent point played by Flavio Cobolli, who doesn't hold back with a forehand and gets his reward.

Deuce.

We're at deuce with Flavio Cobolli serving at 5-4 down. Felix Auger-Aliassime is just two points from the set...

Make that one point now, at Cobolli goes wide with a forehand.

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Felix Auger-Aliassime gets his first serve in and Flavio Cobolli can't get it back.

Auger-Aliassime then comes out on top of a 17-shot rally and Cobolli again misses a return to give up the game.

A double fault at deuce and that means a break point.

Felix Auger-Aliassime goes wide with a volley and he's 0-30 down. Big moments towards the end of the first set of this French Open quarter-final.

The fourth seed finds an ace and a whipped forehand winner when he most needs them.

Flavio Cobollo goes long with a return, but then Auger-Aliassime nets a forehand on the stretch.

It's deuce.

After a couple of breaks were exchanged early on, that's now six holds of serve in a row - as the flags on top of the stands crackle in the wind.