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On a day of stunning upsets, third seed Andre Agassi went down to a straight sets defeat by Thailand's Paradorn Srichaphan.

Agassi started brightly, grabbing the first service break, but after that he was simply steamrollered by an inspired Srichaphan who had never previously advanced beyond the second round of any Grand Slam event.

The man who will face Britain in Davis Cup combat for Thailand later this year, went for all his shots and with Agassi responding with a series of unforced errors, the writing was on the wall long before the end.

Agassi might point to a debatable line call which gave Srichaphan a vital mini-break in the second set, but in truth he was completely outplayed.

Earlier, seven-times winner Pete Sampras became the victim of the biggest upset at Wimbledon's graveyard of champions as his hopes of recapturing former glories were buried by tennis journeyman George Bastl.

Seven-times champion Sampras dug himself out of a deep hole only to fall right back in as Bastl, who only got into the championships as a lucky loser, played the match of his life to triumph 6-3 6-2 4-6 3-6 6-4 in three hours 18 minutes of drama.

There have been some huge upsets on Court Two over the years but this must surely rate as the biggest.

The 27-year-old Swiss player, beaten in the qualifiers last week, only got into the draw after Spain's Felix Mantilla withdrew injured but he never allowed himself to be overawed by the reputation of Sampras.

Number two seed Marat Safin also crashed out in the second round to Belgian Olivier Rochus, who stands just 5ft 5in and is dwarfed by many of the competing women here.

Safin came into these Championships on the back of a tournament win at the Liverpool International.

While, Rochus is the world number 64 who put out his elder brother, Christophe, in the first round and whose childhood ambition was "to be tall".

Despite the rankings gulf dividing them, Rochus sniffed an upset from the off, broke Safin in the opening game of the match, and - despite dropping the third set - finished an impressive 6-2 6-4 3-6 7-6 (7-1) victor.

However, there was good news for British fans with Greg Rusedski keeping his Wimbledon dreams alive after a worrying wobble against South Korea's Hyung-Taik Lee.

Rusedski served for the match in the third set before losing it 7-5, and was made to battle hard before eventually securing a 6-1 6-4 5-7 6-2 second round victory.

Wild card Mark Philippoussis overcame 14th seed Thomas Enqvist in straight sets on Court One.

The big-serving Aussie looked in fine form and edged the opening set 7-5.

That seemed to dent the confidence of Enqvist and the Swede was soon two sets down when he lost the second 6-3.

The third set was again dominated by the power of Philippoussis who took the set and the match 6-4.

Todd Martin became another seed to exit this year's men's singles.

The American, seeded 26 and twice a semi-finalist, was beaten by Arnaud Clement in straight sets on court 18.

Frenchman Clement broke the American twice in the first set and eventually came through 6-3 6-4 7-6.

And Jiri Novak became yet another seeded casualty of this year's men's singles on Wednesday.

The Czech star, seeded 12, never looked comfortable and was beaten by grass court specialist Wayne Arthurs in straight sets on court 5.

Australian Arthurs won the first set 6-3 and went on to claim a titanic tie-break 11-9 before breaking the Czech and closing out 6-3 7-6 6-3.

Andy Roddick lived up to his 'A-Rod' nickname as he demolished hapless Spaniard Alberto Martin in rapid time on Court 18.

Roddick, one of the rising stars of the ATP Tour and the man tipped to succeed Pete Sampras as a future Wimbledon king, simply ripped through his beleagured opponent with some awsome serving and outragous ground strokes.

Martin, more suited to the calm of the red clay, could merely look on as the American dominated proceedings and sent the Wimbledon crowd into rapturous applause.

The Spaniard was finally put out of his misery as the irresistable Roddick wrapped up the match 6-1 6-2 6-2.

Barry Cowan's annual brief spell in the Wimbledon spotlight came to an end as he bowed out in the second round to Ecuador's Nicolas Lapentti.

Cowan, who memorably took Pete Sampras to five sets at the same stage last year, lost in four sets to the world number 25 on court three.

Andrei Pavel eventually prevailed in his men's singles match against Karol Beck.

The Romanian, seeded 15, did not have it all his own way against spirited Slovakian Beck who was playing in his first Wimbledon.

But after a few scares Pavel eventually made it into the third round winning 3-6 6-1 7-6 6-4.

Yevgeny Kafelnikov cantered into the third round after making short work of Nicholas Thomann.

The Russian, seeded five this year, did not have it all his own way in the first set against Thomann, but eventually came through a gruelling tie break.

Kafelnikov raised his game in the second and it all became a bit too much for the Frenchman who visibly wilted on the plush SW19 surface.

He repeated the trick in the third to run out a 7-6 6-2 6-2 winner.

And to end a sensational day valiant American James Blake was finally edged out in a match that will live long in Wimbledon folklore.

Richard Krajicek, a former Wimbledon champion in 1996, had to call on all his reserves and experience to beat the flamboyant American who simply would not lie down.

The match ebbed and flowed throughout with Krajicek, who is playing in only his second tournament in 19 months, taking the first two sets.

But Blake, who has an English mother and was warmly received by the Wimbledon crowd, stormed back to take the next two sets and set up a grand-stand finish.

And what a finish. At 9-9 in the fifth still nothing could separate them before Krajicek finally got the all important break to win 11-9 and breathe the proverbial sigh of relief.

True, the record books will state the Krajicek won and he moves on to round three, but as those who witnessed events late Wednesday evening when the sun was coming down on 'Graveyard' Court number Two will tell you, in this match of unbridled excitement and tension, there simply were no losers.

Meanwhile, in the women's singles second seed Serena Williams made light work of Italy's Francesca Schiavone, winning 6-3 6-3 to reach the third round.

Watched by older sister and holder Venus, the French Open champion overcame the loss of her second service game to grind down her unseeded opponent and will now play qualifier Els Callens, of Belgium, in the third round.

Jennifer Capriati reached the third round, putting in a display which will hardly drive fear into the Williams sisters.

The third seed was a 6-2 6-1 winner against young Canary Islander Marta Marrero on Centre Court.

Twelve years after reaching the fourth round on her Wimbledon debut as a 14-year-old - a year later she made the last eight - Capriati's hunger remains unquestionable.

But her performance on Wednesday was error-strewn, and she was only saved by Marrero seemingly being overawed by the occasion.

Seventh seed Jelena Dokic came within two points of defeat before scraping past Kveta Hrdlickova of the Czech Republic in three sets.

Hrdlickova served for the match at 6-5 in the final set and reached 30-30, but Dokic dug deep to break back before going on to secure a 6-0 4-6 8-6 victory.

Sandrine Testud became the highest ranking seed to exit this year's women's singles.

The 30-year-old eighth-ranked Frenchwoman was beaten by compatriot Mary Pierce on court 15.

Pierce, winner of the Australian Open in 1995 and French Open two years ago, came through 6-3 6-4.

Recent Eastbourne winner Chanda Rubin sent 14th seed Iroda Tulyaganova crashing out of Wimbledon in straight sets.

The in-form American never let her opponent settle and raced into a 3-0 lead in the first set, before eventually taking it 6-3.

The second set was even more one-sided with Rubin taking it 6-1 to comfortably book her place in the third round.

And the shocks continued with Meghann Shaugnessy the next seed to make an early exit.

The thirteenth-ranked American was beaten by Miriam Oremans of the Netherlands on court five.

29-year-old Oremans broke the American in both sets eventually coming through 7-5 6-3.

Ninth seed Amelie Mauresmo did manage to book her place in the third round with a straight sets win over Rita Grande.

The French star edged the first set 6-4 after both players made nervy starts.

However, in the second set Mauresmo started to take control and took the set 6-2 to move into the third round, the furthest she has ever gone at SW19.

Eleventh seed Daniela Hantuchova was made to work for her third round place after an all Slovakian struggle against Martina Sucha.

Leggy Hantuchova started convincingly and soon wrapped up the first set 6-2.

However, in the second set Sucha showed no fear to her Slovakian counterpart and began to play her shots more freely, finally pinching the set 6-4.

But Hantuchova was not to be denied and again began to find her rythm in the decider, finally running out a 6-2 4-6 6-3 winner.

22nd seed Anne Kremer lost in three sets to Maja Matevzic of Slovenia on court 15.

Kremer had no answer to the Slovenian's shot selection and was eventually beaten 6-2 1-6 2-6.

And Clarisa Fernandez became yet another seed to be driven into the Wimbledon turf in the women's singles.

The 30 seed from Argentina was beaten by Belgian Ells Callens on court four.

Fernandez started brightly and won the first set at a canter 6-2.

But the Argentine had no answer to the Belgian's shot selection from then on in and eventually capitulated 6-2 3-6 4-6.