In their first round match they beat the Gloucestershire County League 2-0.
Nadal teamed up with fellow-Spaniard Francisco Roig to beat the Serbian pairing of Novak Djokovic and Dusan Vemic 7-5 6-4 in a first round match.
In a repeat of their first round match at this year's World Championships, Joe Perry had been hoping for revenge on Jamie Cope after losing 10-6 in Sheffield.
The Frenchman used his post-match press conference to criticise tournament organisers for rejecting his pleas to play his first round match on Monday or Tuesday instead of Sunday.
Henin, who put out second seed Nadia Petrova of Russia in her first round match, secured a 6-4 6-3 victory in one hour 17 minutes to reach the quarterfinals.
In a first round match played on Wednesday, the fifth seed Petra Kvitova, of the Czech Republic, beat Anastasia Rodionova after the Australian pulled up with a muscle strain in her left leg while trailing 6-2 1-0.
"I thought I was a little bit better than my first round match, " said Williams, who had come into the tournament under a fitness cloud after limping through her defeat against Elena Dementieva in the final at Sydney last week.
Ivo Karlovic, the 6-foot-10 Croatian who was defeated in the second round by Mr. Murray, took five towels during his rain-delayed first-round match.
Maguire hit breaks of 121 and 111 on his way to a 5-0 second-round win over Alan McManus, while Burnett edged Robert Milkins 5-3 in their first-round match.
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If a player won his first-round match, Carroll proposed, he would advance to play other winners.
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He won three qualifying matches last week and controlled his first-round match against Garcia-Lopez from the outset.
The Scot will play the winner of the first-round match between Frenchman Jeremy Chardy and a qualifier.
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She picked up the problem in practice at Wimbledon and had to withdraw after winning her first-round match.
The lone U.S. singles entrant in Monte Carlo, Donald Young, won just one game in his first-round match.
But 2003 champion Juan Carlos Ferrero was forced to retire from his first-round match due to a leg injury.
He is due to complete his first-round match against Barry Pinches in the Embassy World Championship on 20 April.
The third-seeded Moroccan, who was beaten by Andy Roddick in a dramatic quarter-final in Melbourne, lost his first-round match 7-5 6-3.
The pain persisted, and by the time Sharapova played a first-round match in Montreal in July 2008, it had become severe.
Ferreira was beaten 7-6 6-2 by Argentine clay-court specialist Franco Squillari in his first-round match, which was held over from Tuesday.
"The first-round match is so important in terms of the ranking points so hopefully I can relax a bit, " he said.
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For the first time in his career Monday, Nadal lost the first set of a first-round match at a Grand Slam tournament.
Czech player Kveta Peschke beat Croatian qualifier Karolina Sprem 6-1 6-2 in a first-round match, but then withdrew with a wrist injury.
Max Mirnyi, the 15th seed, joined Srichaphan on the sidelines when he lost to Spain's Galo Blanco , 4-6 6-7 in a tight first-round match.
Victoria Azarenka certainly looked like the world's No. 1 player in winning 12 of the last 14 games in her first-round match against Alberta Brianti.
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Defending champion Davide Sanguinetti brushed aside fellow Italian Giorgio Galimberti 6-2 6-4 in his first-round match to set up a meeting with Max Mirnyi of Belarus.
In the only other first-round match on the opening day, Spain's Conchita Martinez ousted the only German player in the main draw, wild card Anna-Lena Groenefeld, 7-6 6-2.
In the first-round match between Martina Hingis and Jelena Dokic, the number one ladies' seed was knocked out by the 16-year-old and the score was an extraordinary 6-2, 6-0.
In a week of records, Novak Djokovic's first-round match against Olivier Rochus was the latest-ever finish at Wimbledon, while Taylor Dent's 148mph serve against Djokovic in round two was the fastest recorded at the All England club.
Her older sibling Venus, who is in the same half of the draw, bounced back from her early exits at the French Open and Wimbledon by thrashing Roland Garros runnerup Sara Errani 6-3 6-1 in her delayed first-round match.
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