Ah yes! Paire down on one knee to smash a winner cleanly down the line. Good hold.

Jonathan Jurejko
BBC Sport at Wimbledon

Image source, BBC Sport

That's not the Luxembourg national flag, is it? Nope. That is almost identical to the Netherlands flag.

So what's this being waved in the competitors' guests box? This is the civil flag or ensign which is commonly used on the sea to differentiate a Luxembourg ship from a Dutch vessel.

Education and entertainment right there.

Maybe this fella is Luxembourg's very own Captain Phillips. Or their X Factor winner.

A 10th double fault from Paire to open up his service game. Good grief. Give yourself a chance.

It's 0-30 soon after, and 0-40 after a really tired chip into the net. Three break points. The end game in sight?

No! Paire saves three break points in a row with some big serving. But Murray smashes for a fourth break point, can he convert this one?

No. Into the net. Deuce #4...

Murray on serve, the third set still on serve. Which player is more focused now after that latest dispute?

Murray. He holds to love.

Gilles Muller with an "exquisite touch" to set up his break point over Rafa on the way to taking the first set.

There's a genuinely great meeting of players over on court two right now.

Last year's finalist Milos Raonic is taking on bright young thing Alexander Zverev. It's Zverev who has made the first blow, breaking Raonic's serve early on. You can watch it over here.

Image source, Reuters

Boris Becker
Three-time Wimbledon champion on BBC TV

It wasn't a game-changing mistake, but Murray did have a point.

More arguing with the umpire from Andy Murray during the changeover. A replay shows that the serve he wanted to challenge was indeed out.

Let it go...

Image source, Reuters

'I challenged immediately!'

Another row between player and umpire, this time it's Andy Murray who is left annoyed by the man in the chair. He challenged a serve, the umpire acknowledged it, but Murray then asked for a ball to prepare for the next point. At that point the umpire said 'it's all or nothing' and overruled it.

Bizarre. Murray is not a happy man and Paire takes advantage to go 40-0 up in double-quick time. And then throws in a double fault. But still holds.

Jonathan Jurejko
BBC Sport at Wimbledon

Another significant stat from that 2005 meeting between Nadal and Muller here at Wimbledon is this: it remains the Luxembourg leftie's only win against the 15-time Slam champ.

In fact, he's not even taken a set off the Spaniard since. Until now that is...

Image source, Reuters

Now then.

Gilles Muller has served his way to a first set win over Rafa Nadal. It's the first time since the Australian Open final against Federer that Rafa has dropped a set. That's 10 matches and 28 sets ago...

A look at the stats show it's Muller's big serves that are outfoxing the Spaniard.

Image source, BBC Sport

This drop-shot obsession is going to be the end of Benoit Paire. What was that? Poor selection and execution, way wide.

Andy Murray gifted a point on his serve. 30-30, gifted another as Paire drifts long. Gifted the game.

Paire serves first in the third set. At the start of the second set he had a crazy 10 minutes where he was all over the place. Let's see what he's doing now.

He's holding easily, that's what.

Tim Henman
Former British number one on BBC Radio 5 live

I don't think Murray is playing particularly well but he's still winning - that's a good sign.

When I look at Federer and Nadal - they've been playing at a high level.

Murray hasn't had the consistency and level of play.

There are positive signs, but there needs to be an improvement.

You can't see Benoit Paire winning three sets from here, can you?No. No you cannot.

David Law
Radio 5 live commentator

That challenge from Paire must be the worst I've ever seen. 'I know it is six-feet long but I am going to challenge anyway'.

Jonathan Jurejko
BBC Sport at Wimbledon

Muller presses his thumb on his middle finger and index finger, raising his right hand to the air when that first break point goes begging following the intervention of the net cord. The sort of gesture Michael Corleone makes in The Godfather when he's angry.

Moments later he is gesturing again... a vigorous shake of the left fist. This time it is a jubilant one.

A few concerned yelps of 'Come on Rafa!' are heard.

Paire has a fourth break point of the game - got to be taking these chances - and he challenges a Murray backhand which looked close to the line...

It's in. Plumb on the line. Deuce.

Paire drives into the net and now we have set-point Murray. Taken!

Image source, Reuters

Some good statty knowledge from New York Times tennis man Ben Rothenberg...

Andy Murray snatches a point with an impressive backhand winner, cementing his lead in the second set against Benoit Paire.