Federer is through to the last eight of the US Open but will he face Tomas Berdych or Richard Gasquet?
John Isner - Roger Federer
US Open men - 8 September 2015
US Open – Follow the Tennis match between John Isner and Roger Federer live with Eurosport. The match starts at 00:00 on 8 September 2015. Our live coverage lets you follow all the key moments as they happen.
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Federer 7-6(0) 7-6(6) 7-5 Isner. Game, set and match! Once again Isner finds himself triple break point down although this time they are also match points to Federer. Isner saves the first with a booming first serve that Federer can only return into the net. But the world number two wraps up the win at the second attempt when he forces Isner to go for too much on a cross court forehand approach shot, pulling the ball wide into the tramlines.
Federer 7-6(0) 7-6(6) 6-5 Isner. The winners are so even - 54 to Federer, 53 to Isner - although the American has twice as many as unforced errors as Federer. The world number three posts another love service hold to leave himself one game away from the win. Another tie-break? Or will Federer finally get that break to seal the match?
Federer 7-6(0) 7-6(6) 5-5 Isner. Federer posts a love service game to leave himself potentially just one game away from the quarter-finals before Isner responds with a service hold to 30 to level up once more. The American has so much confidence in his serve, it's astonishing.
Federer 7-6(0) 7-6(6) 4-4 Isner. The American finds himself triple break point down. He saves the first with a forehand volley winner while Federer goes just long with a forehand down the centre of the court on the second. Federer nets a backhand on the third to a scream of "yes" from Isner, who then goes on to hold. The American has not dropped a service game since 2013 in the US Open singles.
Federer 7-6(0) 7-6(6) 4-3 Isner. This match has been going two hours and 20 minutes and both players have had exactly five opportunities to break. But we've yet to see a break of serve and Federer posts another service hold, without drama, to sneak ahead once again.
Federer 7-6(0) 7-6(6) 2-2 Isner. Despite being a match that has been overwhelmingly dominated by serve, this match has been incredibly entertaining. Both players post quick and easy service holds to keep this match ticking over on serve.
Federer 7-6(0) 7-6(6) 1-1 Isner. Isner has done very little wrong so far in this match and yet he finds himself two sets to love down. Another game dominated by serve ends as Isner holds to get his side of the scoreboard ticking over in this third set.
Federer 7-6(0) 7-6(6) 1-0 Isner. Federer just keeps heaping disapointment after disappointment on to Isner as he holds despite the loss of the opening point with a blistering forehand winner down the line.
Federer 7-6(0) 7-6(6) Isner. Set. Isner must be wondering what he has to do. The American has a 5-3 lead and is potentially just two points away from levelling up the match. But Federer storms back into contention with the next three points before netting a forehand drive volley to allow Isner to level at 6-6 for the second change of ends. A blistering forehand return of serve winner down the line followed by a backhand winner down the opposite line from Federer wrap up the set, however, and the world number two has one foot in the quarter-finals now.
Federer 7-6(0) 6-6 Isner. Federer throws in a poorer service game once again to give Isner a small look at finishing this set without the breaker. But from 30-all, Federer again slams the door shut and goes on to hold with a forehand winner and force the second set breaker.
Federer 7-6(0) 5-6 Isner. A forehand winner and an ace help Isner recover from 0-30 down before going on to hold and do his bit to ensure this second set ends on a tie-break at least. Federer will have to serve to stay in this set for a second time.
Federer 7-6(0) 5-5 Isner. After a hold to 15 from the American leaves Federer serving to stay in this second set, the second seed races through a love service hold to slam the door shut on any hope Isner had of getting the break.
Federer 7-6(0) 4-4 Isner. If anything, at the moment, it is Federer who's looking more vulnerable as Isner sets up a break point with a emphatic forehand volley winner. But the former world number one recovers before going on to hold, albeit not at the first attempt, and level up once more.
Federer 7-6(0) 3-4 Isner. After that tough service game at the beginning of the set, Isner has really got things firing again as he shuts Federer out from another service game with a hold for the loss of just the one point. Anyone want to put any money on this set going to another tie-break?!
Federer 7-6(0) 3-3 Isner. Another blink-and-you'll-miss-it service hold from Federer who again shuts Isner out of getting a single rally in the game. This is an extremely impressive service display from Federer tonight.
Federer 7-6(0) 2-3 Isner. The American again bookends his game with a pair of aces as he resumes a more normal service game with a fairly comfortable service hold.
Federer 7-6(0) 2-2 Isner. Oooh, Federer's toughest game of the match so far as he finds himself three break points down against the Isner serve. He saves the first with a big serve that Isner cannot return and the second with an ace but another big serve denies Isner on the third break point. Federer also faces a fourth but this time a trip into the net and a forehand volley winner buried into the open court saves it before he too goes on to hold.
Federer 7-6(0) 1-2 Isner. A serve and volley error followed by a netted forehand from Isner help Federer to a break point. The American saves it with an ace and then another one a couple of points later with another booming serve. Federer earns himself a third chance with a short backswing, forehand return winner straight down the outside of the line but again Isner saves it with a big serve. The American squanders a number of game points with some tired-looking shots and wastes all of his challenges but eventually goes on to hold with a forehand volley winner.
Federer 7-6(0) 1-1 Isner. There is not a single rally in the game as Isner fails to land any of his returns. Federer is serving brilliantly tonight and eases through another love service hold to level up.
Federer 7-6(0) 0-1 Isner. The American puts the disappointment of that first set breaker behind him with an opening hold to 15 at the start of the second set.
Federer 7-6(0) Isner. Set. Wow! Federer races through the breaker with a couple of aces through in for good measure. Isner barely has a chance to register he is in a tie-break before Federer earns himself six set points, Isner netting an off-balance backhand to gift his opponent that lead. Another backhand astray and Federer has the first set under his belt.
Federer 6-6 Isner. Shocking to no-one this set will conclude with a tie-break as Isner book-ends his game with a couple of service winners, withstanding a great bit of pressure from Federer in the middle. Isner holds to 30 to take this opening set into the breaker.
Federer 6-5 Isner. Federer's only first serve in of the game comes on the final point when he aces Isner to hold and move ahead once more. And yet, he can miss four consecutive first serves and somehow still hold with ace, such is the quality of his follow-up shot.
Federer 5-5 Isner. Very confident from Isner to keep this opening set alive with a service hold to 15. One thing is for sure, even if this match goes to five sets, it's not going to be a long match - both players moving through games so quickly.
Federer 5-4 Isner. Federer posts a second love service hold in quick succession, even managing to seal the game with a service winner against the American big-server. Isner will have to serve to stay in this opening set next.
Federer 4-4 Isner. Putting the disappointment of failing to break firmly behind him, Federer posts a quick love service game to put all the pressure back on Isner, who responds with a love service hold of his own.
Federer 3-3 Isner. Isner finds himself two break points down after a couple of loose shots to follow up his serve. He saves the first with a spot of serve and volley, coming up with a backhand volley winner to deny Federer, before denying the second seed on the second break point with a service winner. Federer earns himself a third chance at the break with a trademark backhand winner down the line. But again Isner saves it, before going on to hold with an ace and a forehand volley winner.
Federer 3-2 Isner. A double fault from Federer puts him in a spot of trouble as it allows Isner to level at deuce. But the second seed is not one to panic at the scoreline and quickly makes amends, holding from there after two backhand errors from Isner.
Federer 2-2 Isner. An unreturnable serve and ace quickly follow one another as Isner eases through a hold to 30 - backhand winner helping Federer with his second point of the game.
Federer 2-1 Isner. Federer goes for the barn-storming smash winner across court only to pull his ball down into the bottom of the net. He could have let the ball bounce first and, in fact, it could have been pretty close to being out, but Federer goes for the big shot only to fail. Still it's only a temporary blip as he holds on the next point to hold once again.
Federer 1-1 Isner. Big serve, big forehand. That's the way of things with Isner and that's how he eases through a service hold for the loss of just the one point, sealing the game with an inside out forehand winner that lands right on the line across court.
Federer 1-0 Isner. The last meeting between these two came back at the London Olympics in 2012 when Federer won in straight sets, and that is exactly the way he has started today with a love service hold to get his side of the scoreboard ticking over.
Federer leads the head-to-heads by four wins to one over Isner, the American's one victory coming on a clay court in the Davis Cup back in 2012.
Phew. There is no let up in excitement tonight as Roger Federer and John Isner are already out on Arthur Ashe going through their warm up.