Result: Hewitt 6-1 6-7 (7/5) 3-6 4-6 Karlovic

Fourth set

Hewitt 6-1 6-7 3-6 4-6 Karlovic
If Karlovic is feeling nervous, he is not showing it, coming up with a rock-solid volley on the first point. Hewitt tries to lob on the second - not a good idea against a 6ft 10" opponent. A push down the line gives the Croat three match points in his first ever Grand Slam match. One is enough to cause one of the biggest upsets in Wimbledon history.

Hewitt 6-1 6-7 3-6 4-5 Karlovic
Karlovic attacks the net and has Hewitt on the defensive, a tactic that pays off when Hewitt sends a forehand long and goes 15-40 down. A forehand long from the Australian and the Croat qualifier will be serving for the match.

Hewitt 6-1 6-7 3-6 4-4 Karlovic
As the business end of the set approaches, every point is crucial. But still Hewitt cannot make any headway on the giant Croat's serve.

Hewitt 6-1 6-7 3-6 4-3 Karlovic
A much convincing service game from Hewitt, who does not drop a point.

Hewitt 6-1 6-7 3-6 3-3 Karlovic
Serving with the new balls, Karlovic holds to love and is showing no signs of nerves. Hewitt is increasingly in danger of becoming only the second defending champion to exit Wimbledon in the first round - and the first since 1967.

Hewitt 6-1 6-7 3-6 3-2 Karlovic
Hewitt holds serve to edge ahead again in the fourth set.

Hewitt 6-1 6-7 3-6 2-2 Karlovic
Again Karlovic lets slip a 30-0 lead and again his serving rescues him.

Hewitt 6-1 6-7 3-6 2-1 Karlovic
Despite a double fault, Hewitt manages to hold onto his serve.

Hewitt 6-1 6-7 3-6 1-1 Karlovic
Karlovic looks to be cruising to a comfortable hold of serve at 30-0. But Hewitt is trying to fire himself up and wins the next three points to earn him a chance to break. Karlovic pulls out an ace and goes on to hold, causing Hewitt berates himself angrily.

Hewitt 6-1 6-7 3-6 1-0 Karlovic
Hewitt, who knows he must now go to five sets to get through, holds serve.

Third set

Hewitt 6-1 6-7 3-6 Karlovic
Three good serves from Karlovic earn him three set points. He needs just one - clinching the third set in style with an ace.

Hewitt 6-1 6-7 3-5 Karlovic
Again the number one seed struggles, splaying a forehand wide to give Karlovic set point but the Croat hits long and Hewitt comes up with an ace to hold.

Hewitt 6-1 6-7 2-5 Karlovic
Karlovic begins with a double fault but thereafter is in control of the game, rocketing down a succession of hard first serves to keep the pressure on Hewitt.

Hewitt 6-1 6-7 2-4 Karlovic
Hewitt stops the rot with a comfortable service hold.

Hewitt 6-1 6-7 1-4 Karlovic
Karlovic shows Hewitt how to do it with an 135mph ace on the first point of the game and some more powerful serving sees him consolidate his break.

Hewitt 6-1 6-7 1-3 Karlovic
Hewitt is putting pressure on himself with some uncharacteristic unforced errors. A double fault gives Karlovic his first break point of the match - and another one hands him the break.

Hewitt 6-1 6-7 1-2 Karlovic
Hewitt ekes out a break point but Karlovic saves it with an ace and goes on to hold.

Hewitt 6-1 6-7 1-1 Karlovic
Hewitt has to dig deep at 0-30 but comes through the test to take the initiative at the beginning of the third set.

Hewitt 6-1 6-7 0-1 Karlovic
There has been a swing of momentum - now it is Karlovic who is finding his range while Hewitt's level has dropped and shots he was making earlier in the match are now going astray. The Croat holds to love and the defending champion has a match on his hands.

Second set

Hewitt 6-1 6-7 (7/5) Karlovic
Karlovic earns the first mini-break as Hewitt finds the tramlines with a forehand. Hewitt retrieves the mini-break with a fabulous forehand return winner that he manages to pick up unbelievabley early. Karlovic bangs down the fastest serve of the match so far (133mph) and holds his next serve to earn a set point - which he converts with a forehand winner.

Hewitt 6-1 6-6 Karlovic
Karlovic keeps his nerve and forces a tiebreak.

Hewitt 6-1 6-5 Karlovic
At 15-15 all, a public announcement over the loud speaker blares out during a rally and Hewitt is annoyed that the umpire refuses to replay the point. It turns out to be irrelevant as Hewitt wins the next three points to hold serve.

Hewitt 6-1 5-5 Karlovic
A whipped forehand down the line gives Hewitt a set point but Karlovic saves it and wins the game. The Croat qualifier, playing in his first ever Grand Slam match, is proving a much tougher opponent in the second set.

Hewitt 6-1 5-4 Karlovic
Hewitt double-faults to give his opponent a glimpse of an opportunity at 15-30. But the Australian then comes up with two sizzling passes, both of which are followed with his trademark "Come on!" war-cry and goes on to hold.

Hewitt 6-1 4-4 Karlovic
Two aces from Karlovic ensure that he enjoys another comfortable hold of serve.

Hewitt 6-1 4-3 Karlovic
For the first time in the match, Hewitt wobbles slightly on serve, throwing in two double faults as he is taken to deuce. But the 22-year-old retrieves the situation and manages to hold.

Hewitt 6-1 3-3 Karlovic
A convincing service game from Karlovic sees him hold to love. His serve is looking a lot smoother and more effective now.

Hewitt 6-1 3-2 Karlovic
After the longest game of the match, Hewitt makes light work of his own service game, dropping just one point as he keeps his nose in front in this set.

Hewitt 6-1 2-2 Karlovic
Again Karlovic is up against it but from 0-40 down, he works his way back to game point, serving his second ace in the process. A double fault halts his progress but the 6ft 10" Croat hangs in and finally holds with an emphatic smash.

Hewitt 6-1 2-1 Karlovic
Hewitt's serve is working like clockwork and sets him up for a very straightforward love game.

Hewitt 6-1 1-1 Karlovic
Things are not looking good for the giant Croat as he finds himself 15-40 down after Hewitt flashes a couple of return winners past him. But Karlovic holds firm and wins the game.

Hewitt 6-1 1-0 Karlovic
Hewitt holds to 30 to get off the mark straight away in the second set.

First set

Hewitt 6-1 Karlovic
Hewitt is jumping all over Karlovic's second serve and two cross-court winners - one backhand, one forehand - bring up two sets points. A double fault from Karlovic hands the first set to the Australian.

Hewitt 5-1 Karlovic
Hewitt bangs down two aces as he moves to within a game of the first set.

Hewitt 4-1 Karlovic
Karlovic gets a confidence boost by holding his serve to love and receives warm applause from the crowd.

Hewitt 4-0 Karlovic
Hewitt double-faults at 40-0 to concede the first point of the match on his serve. But it is a temporary blip and the Australian continues his march through the first set.

Hewitt 3-0 Karlovic
Hewitt takes advantage of some erratic serving from his Croat opponent to register his second break.

Hewitt 2-0 Karlovic
Defending champion Hewitt backs up his break with a love service game, including the first ace of the match.