3-6 - Roddick holds imperiously, finishing with an ace to round it off in style, and the American takes the fourth set 6-3 to march through to the fourth round!

3-4 - A crunching forehand winner from Melzer gives him two break points, the first of which is saved with a powerful ace down the T by Roddick, but a tame forehand into the net gives the Austrian the break back!

1-4 - The American keeps his composure and holds serve to consolidate his break, with Melzer unable to establish himself and attempt to hit back. He will need something special now to get back in the match.

1-2 - Roddick holds with a lightning-quick hold, and the American is a man on a mission, racing to his chair and looking very revved up. The number six seed will be happy to be serving first, piling the pressure on Melzer once more to hold.

0-1 - Roddick gets the fourth set underway with a regulation service hold, and Melzer looks to be bracing himself for a charge later on in the set. The Austrian will have to start quickly on his serve now though.

5-4 - Roddick holds again as if to pose the question to himself: 'How did you possibly get broken?' The American is serving so big, it is astonishing Melzer now has a chance to serve out for the third set - can he hold his nerve?

4-3 - Roddick does all he can, holding his serve to 15 and putting the pressure straight back on Melzer, who now has two service games potentially, in which he must close out the set. Two big serves from Roddick were enough in that game.

3-2 - Melzer breaks! The Austrian suddenly finds a new level to go to, stepping up his intensity dramatically to break Roddick and take the advantage in this third set. A flashing backhand winner down the line closes out the game after two fierce forehand returns.

1-2 - Maybe he can follow occasionally! Roddick, who impressively refuses to give up on approaching the net, despite his numerous missed volleys, follows his serve in once again, and this time flicks a crisp backhand cross court to close out the game with a flourish.

0-1 - Roddick opens the third set with a convincing service hold, despite having a bit of a dip in his intensity. The American is entitled to a slight lull after clinching a two-set lead, however.

6-7 - A flashing inside-out forehand winner cross-court from Roddick gives him four set points, and a sloppy forehand which goes long from Melzer hands it to him. The American leads by two sets now on Centre Court.

TB1-3 - Roddick follows two errors from Melzer with a fearsome ace, and it looks like going the American's way once again, unless the Austrian can up his intensity.

6-5 - Melzer holds his serve to force the set into a defining moment: a break of serve would level the match for Melzer, or a hold by Roddick would take us into a second tie-break.

5-4 - An exquisite lob from Melzer prompts sporting applause from Roddick, who is left bemused at his opponent's inventiveness. Roddick pegs him back to deuce with a fine backhand volley - which is a rare feat for the sixth seed, and a break point follows after a forehand winner, and he saves it with a fiery ace. Melzer then replicates the feat, before saving a third with a brilliant half volley and ending with an ace to show great character.

4-3 - Melzer completes a hugely impressive service hold, executing a superb serve-volley to move to 30-15, then following it with an ace. Roddick challenges the final point, but has no luck, and Melzer regains his lead.

3-2 - Melzer uses all his varieties of slice and kick serves to hamper with Roddick's rhythm on return, and the Austrian continues to play well tactically against his powerful opponent.

2-1 - Astonishingly, Melzer continues to out-ace Roddick so far today - 14 to 11 - and the Austrian holds to 15, looking utterly faultless in the process - can he keep this up though?

1-0 - Melzer holds with nonchalance in the opening game of the second set, but he will need to do more than just hold serve to get back in this match.

6-7 - Roddick takes the tie-break 7-2, and Melzer completely capitulates at the crunch time in the set, with Roddick upping the intensity superbly and holding his composure.

TB0-2 - It is a very poor start from Melzer, who commits two unforced errors to begin the first set, firing a forehand wide and a backhand long.

5-6 - Let us not forget how confident Roddick becomes in a tie-break; the American usually has the edge at the crunch point. The sixth seed holds once more, with two fine serves, and can now have a free hit at Melzer's serve.

4-5 - Roddick overturns a clean winner from Melzer which was originally called good, but was very marginally out, but then misses a simple volley at the net. The American is pretty hesitant, but he recovers well with two powerful forehands to hold.

3-4 - Roddick responds with a comprehensive service hold to love, and throws the balls away after a final ace to demonstrate his confidence and with an almost disdainful 'That is how you serve' body language.

2-3 - Roddick is severely tested by Melzer, who forces two break points, but the big-serving American bails himself out of trouble with two fearsome first deliveries, and the number six seed comes through to hold.

1-2 - Andy Roddick holds serve again with ease, firing two more first deliveries down the centre, and regaining his lead. You have to say, the American looks very comfortable out on Centre Court as usual.

0-1 - Roddick holds with consummate ease, and ends with two fierce aces down the T - a perfect start from the American.

- - And that of sixth seeded American Andy Roddick

- - The weather is absolutely glorious at Wimbledon, with the sun bathing the Centre Court.

- - Sixth seed Andy Roddick is next up on Centre Court for his third-round match against Austrian 26th seed Jurgen Melzer.