Roger Federer vs Juan Martin Del Potro Miami Masters 2017 live score match updates

Up next for Federer? Roberto Bautista Agut, who beat Sam Querrey in his earlier match. RBA is the 14th seed here.

Roger Federer beats Juan Martin del Potro 6-3, 6-4.

Federer has to declare himself in STYLE. Three match points - and at 40-0, Roger Federer slices - and WINS. Easy as you like. 6-3, 6-4.

A quick service hold from Juan Martin del Potro and Federer leads 5-4. Time to serve for the match!

How fit is Roger Federer? Instead of us answering that question for you, watch the last bits of this match. Or at least what seem like it!

This match in our opinion, has shifted momentum quite firmly. Federer's got the upper hand and how and he's on top of the scorecard. But it's looking like a hard-fought win and then some for the victor!

Hoo boy. When we told you Federer's worked on his bh, we were NOT kidding! After a bit of fight for control in the first set, the set is one sided and how.

Federer leads 3-2 in the second....and he breaks! Is this the deciding factor here?

Effortless and buttery smooth. Federer picks a spot - and he places i t

This match is going to go on for a loooong time, we can bet already. Every single game is being taken to the brink and how, and it's a mishit from RF that gives Del Potro that game.

Some nifty footwork here too from Federer as he slides in to make those shots. Gael Monfils, where are you?

One game all in the second and so far, so good for each player.

Age? Injury? What are those? Neither player is tiring - or giving up here. Riveting stuff.

Today's winner will play Spain's Roberto Bautista Agut, who beat Sam Querrey earlier.

Roger Federer wins the first set 6-3.

Goodness! This is turning out to be quite the match. We've never seen quite as many breaks and back-and-forth exchanges there, and just when it looked like Federer was about to double fault, he pulls out an ace.

Delpo brings up a third break point - this right after an epic forehand from Federer that's kissing the tramlines.

Del Potro's fighting back - and almost has the break back here!

Yet another lined and angled and perfectly set-up shot.

And finally, after trying and trying, Federer breaks to lead 5-3!

SMASH! Del Potro sends one a bit high and Federer's right there at the net to take it with open arms...er, racquet?

That's the point to Federer, in style.

We can't believe the angles Federer's getting on his bh. 4-3 now to the Swiss.

What a rally at the net! And by at the net, I literally mean right there. One might well feel like a dog watching the tennis ball go end-to-end.
Lightning fast, and Federer sends another beautifully placed backhand just wide of Del Potro.

Federer races to a 40-15 lead .... and Del Potro saves BP!

Then he does it again.

Then again.

Now he's won the game with a fabulous backhand swing.

Three games all!!

Roger Federer leads 3-2 on serve.

Almost a challenge from Delpo there but he realises better. Federer's backhand is really his biggest asset now, and he's placing it perfectly.

We can't even aim this well with motion sensors in virtual tennis....

A good serve from Delpo there and a bum return from Roger Federer into the net on that forehand. Not the prettiest sight. Del Potro holds for 2-2.

Federer's also attacking Delpo's backhand early on!

Federer's backhand - forehand combo is SMOKING through - and that was a hell of a blink-and-you'll-miss-it game - we almost did!

Roger Federer 1- 1 Del Potro

Two break points down, Del Potro saves them both to hold on! Federer's backhand is great, but on that occasion, he's shanked it into the meat of the net. Meh. Not his best.

Federer brings up his first break point - and Del Potro slots that well to stave it off. But now it's a second BP to the Swiss.

On the verge of a service break is Roger Federer! He forces Del Potro to the net and it pays off - the Argentine sends his fh into the net!

What a start! A quick forehand rally from Federer forces Del Potro wide, which the Swiss follows up with an ace. And just like that, he races to a love hold! 1-0 to Roger Federer.

Juan Martin del Potro wins the toss, and has elected to receive serve.

It's time! This 'late - but early' start courtesy a retirement from Garbine Muguruza, who has retired from her match against Caroline Wozniacki.

Miami Open 2017 Preview: Roger Federer sets up Del Potro contest

Federer has won two sunshine doubles, back to back in 2005 and 2006 - and will go for No. 3 this year !

Federer is also looking for the prestigious "Sunshine Double" here in Miami - the combination of Indian Wells and Miami in the same calendar year. He's one of only two currently active players to have achieved the feat; the other is Novak Djokovic, who is currently recuperating from injury.

Both players are in stunning form as of late, but Delpo has injury struggles that Federer does not!

Delpo's only Major title to date - at the 2009 US Open - at the cost of Roger Federer.

Roger Federer has won 15 of the pair's 20 matches so far - one sided? You might think so! But Federer has only won two of their last five matches - with Delpo taking a set each time!

It's meeting #21 for these two old friends, and let's remind you that it's Federer who leads that record - and how!

Roger Federer vs Juan Martin Del Potro Miami Masters 2017 live score match updates

Roger Federer plays Juan Martin del Potro for a spot in the fourth round at the Miami Masters!