The Swiss third seed was hoping to become the first man since Jim Courier in 1992 to win both the Australian and French Open in the same year, however, a less than scintillating performance, with 62 unforced errors, was enough for Garcia-López to walk away victor in four sets.

The usual playmaking brilliance from the talented Swiss was nowhere to be seen in the 2 hour 23min encounter, with the 41st-ranked Spaniard dominating the battle of the single-handed backhands.

Time after time Wawrinka seemed to lose focus, spraying shots high, wide and increasingly un-handsome.

Despite a slight respite in the second set, following a 6-4 defeat in the opener, the man from Lausanne won just two games in the final two sets and eventually walked off the court to a muffled chorus of boos by the uncompromising French crowd.

"The match wasn't good at all," Wawrinka admitted after his 6-4, 5-7, 6-2, 6-0 defeat.

"I was trying to find my game, trying to be aggressive.

"I don't have all the answers to why I didn't play so good.

"I need to take a few days to see why.

"It was not only the pressure.

"It's a different story, a different picture for my career.

"I have to put the puzzle back together.

"Since winning a grand slam, everything is different.

"Today I was trying to find a solution but it was just terrible."

Rafael Nadal breezed past Robby Ginepri as he bids for his ninth French Open title in the last 10 years ©Getty Images



With that defeat, world number one and defending champion Rafael Nadal looks even more likely to win his ninth French Open title within the last decade.

The Spaniard demolished American Robby Ginepri 6-0, 6-3, 6-0 on Suzanne Lenglen Court after a rain-interrupted day forced the pair to wait until late afternoon to get play underway.

When the duo eventually made it on to the court Nadal ensured they were not there for long, as he breezed past the world number 275 in just 104 minutes.

Serbia's Novak Djokovic looks set to ensure it will not be a one-horse race to the title, as he recorded a straight sets victory over Portuguese opponent Joao Sousa in just under two hours.

The world number two is yet to pick up the coveted trophy at Roland Garros and, despite losing concentration in the third set, progressed to the next round, winning 6-1, 6-2, 6-4.

Maria Sharapova showed no mercy against fellow Russian Ksenia Pervak as she secured a place in the second round with a 6-1, 6-2 victory ©Getty Images



In the women's contest, 2012 French Open winner Maria Sharapova demolished fellow Russian Ksenia Pervak 6-1, 6-2 to keep alive a possible quarter-final tie with defending champion Serena Williams.

The 2011 Wimbledon champion Petra Kvitova beat fading Kazakh opponent Zarina Diyas 7-5, 6-2 with a flurry of 25 winners to her opponent's mere two to book a spot in round two.

France's best female hope, Alize Cornet, blazed through to the second round as she defeated Australian Ashleigh Barty 6-2, 6-1.

Action continues at Roland Garros tomorrow where fifth seed David Ferer of Spain will begin his challenge against the Netherlands' Igor Sijsling, with Britain's Andy Murray up against Kazakh Andrey Golubev.

Second seed in the women's contest, China's Li Na, will open her account against France's Kristina Mladenovic, while up and coming Romanian Simona Halep will take on Alisa Kleybanova of Russia.

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