Evening all. It's time for Roger Federer! And it's time for Francis Tiafoe! This should be great.

So, we're just about and eventually done - see you back here for the afternoon session. Night!

So there we are. When all's said and done, Federer has won again, looking fit and strong in the process; he'll be the better for the workout and plays Kavcic or Youzhny next.

This is brilliant, compelling, dramatic stuff, and Tiafoe, perhaos still celebrating the previous game, allows Federer into this one, hitting long and then into the net; 0-30. He can't get his first serve in and Federer has a huge chance on the forehand, but nets himself. Oh dear; a long rally, Tiafoe nets a backhand when he could easily have run around it to unleash the fore, and he's now two match points down. But Federer nets a backhand of his own! Third match point coming up ... and he low return forces Tiafoe to net! FEDERER HAS DONE IT! BUT FRANCES TIAFOE IS GOING TO BE A STAR! WHAT A PERFORMANCE FROM HIM! WHAT SKILL, WHAT POWER, WHAT MENTAL STRENGTH! I CANNOT WAIT TO SEE HIM AGAIN!

Federer nets a forehand to give Tiafoe a sniff, but is quickly onto a short return to clean up. Tiafoe then nets his next return only for Federer to net a volley; he really should've put that away. As such, he fires an ace down the middle - Tiafoe challenges, but it's right on the outside of the line - but he can't convert the matchpoint! Tiafoe plays a clever shot across the face of the net and Federer nets his volley! Again! So he responds with an ace again, Tiafoe challenges, and this time it is wide! Federer then hits a forehand wide! What is going on! Break point! Another ace down the middle, another challenge! It's on the outside of the line! Break point saved! Phew.

Oh I say! Tiafoe plays a wondrous forehand cross-court for break point, then as Federer coes to the net he passes him down the line! THIS IS AMAZING!

Federer wants to go home, but Tiafoe isn't letting him. At 0-15, he smites a forehand down the line after a backhand opened the space, wins the next three points too, and The Fed will have to serve it out!

Federer is so solid on serve (when he's so solid on serve). He's only conceded one point this set and that took a forehand of epic proportions. Another love hold, a "Come on!" and he's nearly home.

And still Tiafoe won't go away; why should he? He's bloody good and he knows he is; this is his stage. He wins a love game.

Surely this is now, finally, did. Federer does lose his first service point of the set, courtesy of that magical forehand, but that's all Tiafoe can muster.

An actual adult is doing this.

Federer slides ahead in the game by way of a lovely backhand slice but Tiafoe pegs him back then wallops yet another forehand to go 30-15. Federer, though, is returning far better than at the start of the match and a forehand levels things again before Tiafoe rockets one of his own long and wide; he challenges to no avail and that's break point. His home crowd cheer a fault - that's real nice, that - and then he plays an injudicious drop which Federer pastes past him on the backhand. He can't believe he did that!

Majestic stuff from Federer!

Federer is back to looking impregnable on serve, an d his back looks fine as he hammers down a leaping overhead. Second love-hold in a row after being broken twice in a row.

Tiafoe plays a lovely backhand down the line, opening the court for a forehand winner which wrongfoots Federer, and another forehand gives him 30-0. Federer has never lost in the first round here, and the possibility of a final set tiebreaker probably makes that more likely. Anyway, Tiafoe holds to 30 and is in the decider. He is also 19!

In a one set shoot-out, it's tempting to back the man with the bigger serve, especially when it's backed up by a forehand such as Tiafoe's. But Federer is Federer and he looks businesslike again, racing through a love game to let his man know that things are real.

At 30-0, Tiafoe plays a delicious oblique volley, then chucks in a double fault going for a second serve ace; good for him. And a murderous forehand is then too much for Federer, and we've got ourselves a decider! Unbelievable! For the last hour it's looked a formality that Federer would win in four, now he might lose in five! Tiafoe is hitting the ball beautifully now, and also getting himself into the correct position to return Federer's best shots.

Tiafoe is making Federer hit more balls now, even in the points that he loses; perhaps he's getting a better read on him. And what a point he plays to get 15-30, haring to the net after a booming forehand, then swiping two volleys until Federer couldn't retort. And suddenly it's 15-40! What on earth is going on?! Oh wow! Tiafoe has the double break, and will serve for 2-2! This is incredible! He's found his power, he's found his confidence, and is blazing away like the clappers!

Perhaps Federer lost concentration, and he certainly didn't make Tiafoe hit winners, but Tiafoe still did well to stick with him given what's happened in the last two sets. Federer ought really to break straight back - from 15-30, he has plenty of chances - but Tiafoe wins three points in a row to win three games in a row, and we might just have ourselves a decider!

Tiafoe gets to 30 on the Federer serve and forces his way into the next rally ... and Federer goes long with a squash shot from the baseline! Deuce! Federer gets lucky with a loopy one off the frame, then hands Tiafoe the break-point with an errant backhand! And another errant backhand gives Tiafoe the break! Who saw that coming!

Roger Federer produced some majestic tennis in the second set as he drew level against Frances Tiafoe.

Tiafoe retorts with a swift hold of his own. He's 19 years-old! The question, I guess, is how does he develop to reach the standard of the best? Men's tennis seems to have a problem in that regard.

Tiafoe is not going to break Federer again; it'll take a breaker if he's to make an impression. He's not had a break point for an hour and 40 minutes.