In the first round, Nadal lost the first set against the hard-hitting Daniel Brands.
After I lost the first set today, I tried to find that inner strength.
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The Americans had lost the first set and appeared overmatched in the second.
Elsewhere, eighth seed Anastasia Myskina lost the first set but fought back to beat Swiss player Emmanuelle Gagliardi 5-7 6-2 6-0.
For the first time in his career Monday, Nadal lost the first set of a first-round match at a Grand Slam tournament.
The fourth seed screamed in pain as she lost the first set and required medical treatment, returning with strapping around her right thigh.
Rising star Golding lost the first set to the ninth seed but dug deep to claim a 4-6 6-4 6-4 victory on Court 12.
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In the tie-break, Burton and Morgan saved one match point but could not stop the next one and lost the first set in 56 minutes.
Sharapova lost the first set 6-4 but then dropped only three games in taking the next two sets to earn a last eight match with Urszula Radwanska.
Bolelli, who had lost the first set 6-0 in under 30 minutes, appeared to sustain a shoulder injury when he attempted a smash shot to hold at 0-1.
"I cannot play third after men's and girls when my possible opponent plays second after girls, " Nadal, who lost the first set of his opener to Daniel Brands, said.
Russian number one Safin lost the first set of his match on a tie-break but came back strongly to win the next two 7-5 7-5, before closing out the match 6-1 as the Argentine crumbled.
Americans Phil Dalhausser and Todd Rogers edged the Brazilian team in the first set, lost the second set and then came back to sweep the third.
The French number one walked the first set but lost the second before eventually claiming a 6-1 5-7 6-1 first-round victory.
But the turning point proved to be the first time Baltacha lost her serve in the second set.
Seemingly on his way to a straight-sets defeat, Djokovic dug in to rattle off the next six games to take the third set -- the first time in seven matches that Nadal had lost a set at Roland Garros.
She broke Vaidisova twice to quickly wrap up the first set and early in the second set, the Czech lost her serve again and from then on Petrova dominated.
The Briton was featuring in the main draw for the first time and was up against the player, ranked 31 places below her, who she lost to in the Wimbledon first round after being a set up.
The No. 9-seeded Stosur never lost serve but needed nearly an hour to take the first set against Mladenovic.
The former Wimbledon champion struggled in the first set and lost four straight games from 2-2, including two breaks to love on his service.
The octogenarian has an impressive record of reuniting people who get lost at the Kumbh Mela - he set up his first camp in 1946 and has covered five Maha Kumbh festivals (which fall once in 12 years), six half-Kumbh and 56 Magh melas that are held every January.
Though this generation is sticking around longer, the results aren't always wonderful: 13 of the 30-something men lost their first-round matches without winning a set, almost as many as the 14 who won their matches.
The American briefly lost focus, and her serve, at 5-1 up in the first set but promptly made amends in the next game to secure the set with a scorching forehand winner.
Venus Williams lost her first two matches in three-set affairs, and was taken to a decider by Svetlana Kuznetsova for the first time in their eight career encounters before prevailing 6-2 6-7 (3-7) 6-4 in two and a half hours.
Gulbis, renowned for his fiery temperament, smashed his racket during the first set of his match against Andreas Seppi as he lost five straight games to concede it 7-5.
Sharapova struggled with both her first and second serves, and in the second set she lost eight consecutive service points.
His success in 2002 stemmed from a surprise semi-final appearance at the year's first Grand Slam in Australia where he lost to eventual champion Thomas Johansson in a five-set thriller.
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