All the action from Court One as second seed Andy Roddick faces experienced campaigner Sjeng Schalken for a place in the semi-finals.

Schalken 6-7 (5-7) 6-7 (9-11) 3-6 Roddick
Roddick pounds down a couple of aces to go 30-0 up and wraps the match up with an exuberant smash.

Schalken 6-7 (5-7) 6-7 (9-11) 3-5 Roddick
Schalken makes a couple of glaring errors but manages to hold his serve, making sure Roddick has to serve for the match.

Schalken 6-7 (5-7) 6-7 (9-11) 2-5 Roddick
Roddick races through his service game with a series of awesome deliveries.

Schalken 6-7 (5-7) 6-7 (9-11) 2-4 Roddick
Two backhand errors in a row from Schalken see Roddick take a 30-0 lead on the Dutchman's serve. He wins a long rally to cut the deficit but then sends a forehand long to gift Roddick two break points. Roddick chips the ball back on the first of them, luring Schalken into the net, and Roddick then drills a forehand passing shot down the line to claim the first break of serve in the match. Given Roddick's fearsome serve, this looks like the decisive moment in the match.

Schalken 6-7 (5-7) 6-7 (9-11) 2-3 Roddick
Roddick's service game goes ace, service winner, ace, double fault before a rally finally develops on the fifth point, which Roddick wins courtesy of a thumping forehand down the line which Schalken can not return.

Schalken 6-7 (5-7) 6-7 (9-11) 2-2 Roddick
Schalken wins his service game as Roddick dumps a simple mid-court forehand into the net.

Schalken 6-7 (5-7) 6-7 (9-11) 1-2 Roddick
Play has resumed after a second break for rain. Roddick wins his service game to edge ahead in the third set.

Schalken 6-7 (5-7) 6-7 (9-11) 1-1 Roddick
Schalken wins his serve without dropping a point and play is promptly suspended.

Schalken 6-7 (5-7) 6-7 (9-11) 0-1 Roddick
Schalken forces a break point but Roddick saves it with an ace. Schalken gets another chance when Roddick hits a forehand long and this time Roddick saves it with a second service ace of 127pmh! The young American promptly double faults to give Schalken a third chance to break but the Dutchman sends a tame backhand into the net and Roddick goes on to win the game with two good volleys.

Second set:

Schalken 6-7 (5-7) 6-7 (9-11) Roddick
Schalken wins the first point of the tiebreak but Roddick hits back with two aces. Roddick nets a backhand as Schalken levels at 2-2 but the Dutchman then misses a backhand to give Roddick the first mini-break. The American promptly hands it back with a tame forehand into the net and the players swap ends at 3-3. A Roddick smash gives him the advantage but Schalken controls the next point and puts away a simple volley to make it 4-4. Roddick then mis-hits a forehand miles out to trail 5-4 but bludgeons his way level on the next point, only to give Schalken a set point when he sends a simple volley into the net. The Dutchman misses out when he sends a forehand long and the players change ends at 6-6. Schalken earns another set point when Roddick sends a lob long but Roddick saves it with a brutal serve and earns one of his own with another fierce delivery. A long rally develops and Schalken survives when Roddick mis-times a forehand. The Dutchman goes 8-7 up with a backhand drive volley but Roddick saves the set point with a brave forehand pulled down the line and goes 10-9 up with a fierce forehand cross court on the next point. This time Schalken does not escape, sending a backhand over the baseline to give Roddick the second set.

Schalken 6-7 (5-7) 6-6 Roddick
Roddick nets a couple of volleys to be hauled back to 30-30 but wins the next two points to take the set to a tiebreak.

Schalken 6-7 (5-7) 6-5 Roddick
Consecutive backhand passing shots from Roddick give him a 30-0 lead but he spurns the chance to go to 40-0 when he nets an attempt at a third. The game goes to several deuces before the umpire suspends play because of rain at 1531 BST. The players return to court at 1600 BST and Schalken immediately suffers a bad call as a backhand is called long even though the ball landed on the line, handing Roddick a break point. However, the American cannot take it, dumping a forehand into the net, and Schalken goes on to win the game.

Schalken 6-7 (5-7) 5-5 Roddick
Roddick holds his serve and there is brief confusion as the umpire calls for a tiebreak two games early.

Schalken 6-7 (5-7) 5-4 Roddick
Schalken sends a backhand wide after a 22-stroke rally - the longest of the match - to go 30-0 down but fights his way back to hold his serve.

Schalken 6-7 (5-7) 4-4 Roddick
Roddick holds serve with few alarms.

Schalken 6-7 (5-7) 4-3 Roddick
Schalken looks in trouble at 15-30 but produces a series of fine backhands to get out of trouble. An extremely frustrated Roddick shouts to himself "keep the ball in".

Schalken 6-7 (5-7) 3-3 Roddick
Schalken manages a fine backhand passing shot as Roddick approaches the net on game point and he forces deuce when he puts away a flat forehand from mid-court. Roddick then sends the ball over the baseline but he fights off the break point with some brave, deep shots. Schalken sends a backhand long to hand Roddick game point and the American duly closes out the game.

Schalken 6-7 (5-7) 3-2 Roddick
Schalken wins all four points on his serve.

Schalken 6-7 (5-7) 2-2 Roddick
Roddick's serve is in good working order and he does not drop a point.

Schalken 6-7 (5-7) 2-1 Roddick
Schalken wins his serve with ease.

Schalken 6-7 (5-7) 1-1 Roddick
Roddick fires his seventh ace but from 40-15 he hits consecutive forehands long. Schalken nearly forces a break point but his attempted forehand pass misses the line by two inches.

Schalken 6-7 (5-7) 1-0 Roddick
At 15-30 Roddick produces a great lob to turn Schalken, but then hits his next shot long, much to his frustration. Schalken holds serve without any further alarms.

First set:

Schalken 6-7 (5-7) Roddick
Schalken wins the first point on the Roddick serve and goes 2-0 up with a stop volley, but the American breaks back on the third despite falling over during the rally. A forehand volley enables Roddick to make it 2-2 and he edges ahead at 3-2 when Schalken sends a backhand long. The tall Dutchman then nets a backhand volley to lose his serve before Roddick nets a return to make it 4-3. Two unreturnable serves give Roddick three set points and Schalken saves the first with a thumping forehand from the middle of the court. On the second set point Schalken approaches the net and fails dismally with an attempted drop volley to give Roddick the first set.

Schalken 6-6 Roddick
Roddick shouts for a phone to be turned off after losing the first point but fights back form 40-0 down to force deuce by out-rallying Schalken from the back of the court. Schalken sends a forehand long to give Roddick a break point but the American sends at attempted forehand passing shot wide as Schalken approaches the net. On the next point the players get drawn into a long rally which Schalken wins on the 21st stroke with a glorious backhand deep into the corner. The Dutchman then rips a forehand across court on the angle to take the set to a tiebreak.

Schalken 5-6 Roddick
Schalken nearly wins a point on the Roddick serve but his forehand lands in the tramlines.

Schalken 5-5 Roddick
Schalken does not have the quickest of serves but he still manages two aces as he holds for the loss of one point.

Schalken 4-5 Roddick
Roddick finishes off with an ace as the set continues to go with serve.

Schalken 4-4 Roddick
Schalken produces an impressive service game, getting every first serve in and not dropping a point.

Schalken 3-4 Roddick
Roddick double faults at 30-0 but is otherwise untroubled and finishes off with an ace.

Schalken 3-3 Roddick
Schalken's service games have many more rallies than Roddick's but so far the end result is the same, with the Dutchman only dropping one point.

Schalken 2-3 Roddick
Roddick is untroubled on his serve and does not lose a point.

Schalken 2-2 Roddick
Schalken cruises through his service game for the loss of just one point.

Schalken 1-2 Roddick
Roddick fires down his first ace of the match and also nearly hits Schalken with a couple of fearsome serves.

Schalken 1-1 Roddick
Schalken finishes off with an ace as he also holds his serve without any alarms.

Schalken 0-1 Roddick
Roddick opens up with a comfortable service game and cranks the speed up to 140mph.

1404 BST: The players are on court and are knocking up.

Roddick has yet to drop a set at Wimbledon this year, but Dutch 12th seed Schalken is serving well and could pose problems for the American.