Garcia, who is seeded 28th, won 6-4, 4-6, 9-7.
"But definitely during the clay court season, the second and third sets were the best I have played for sure". I didn't play flawless tennis in the first three rounds, but [playing over the best of five sets] gives you a lot better chance of turning your form around and also winning matches just by playing smart. That's very positive, because I wasn't doing that for the last few tournaments and the last couple of matches I have done it, and totally turned the matches around. She beat 2010 runner-up Samantha Stosur 2-6, 6-2, 6-4.
Other men advancing before the downpour: 2014 U.S. Open champion Marin Cilic, Kevin Anderson and Fernando Verdasco. The 18-year-old from California did so when play resumed Saturday and went a break up early in the third set. "I can move pretty well". His best showing in Paris was a semifinal run in 2008.
Neither, really, could Murray, who noticed how crestfallen his opponent was after that vital set. He won in less than two hours. Cilic is the 2005 Roland Garros boys' champion.
Isner was the last USA man in the draw of 11 who entered the tournament.
Del Potro's mighty forehand has survived his wrist troubles and he used it to great effect to open up a 5-3 lead in the first set.
Although Wozniacki leads the Russian 7-6 overall, it will be their first match on clay. "He had some opportunities obviously to close it out, and he served a double fault in the tiebreak on one of the set points".
He maintained the advantage throughout a high-quality set, only to be broken at 5-4 after failing to convert a set point. Wawrinka won 7-6 (7/2), 6-0, 6-2 to enter the pre-quarter-finals.
Wawrinka broke him in the next game and then served out the match.
Anderson missed this year's Australian Open with a hip injury. She lost in the first or second round each of the previous three years.
Hsieh of Taiwan upset seventh-seeded Johanna Konta in the opening round. The Ukrainian managed to hold serve, however, which allowed Martic to serve for the match at 5-3. In another quarterfinal, Pliskova meets No. 28 Caroline Garcia, a 6-2, 6-4 victor against Alize Cornet in a match between two Frenchwomen. She will next face the victor of the match between Veronica Cepede Royg and Mariana Duque-Marina.
Murray needed two hours and 53 minutes to win 7-6 (8), 7-5, 6-0 over the Argentine del Potro.
"Between two players who are that good those are significant mini-battles within the battle and Andy came out on top".
Halep, the third seed, is a popular pick for winning her first Grand Slam with this tournament, and she breezed through Kasatkina, 6-0, 7-5.
Second seed Karolina Pliskova faces Paraguay's Veronica Cepede Royg for a place in the last eight. Indian fans can look forward to Purav Raja and Divij Sharan's men's doubles third round match.
Seven-time major champion Venus Williams is bidding for a quarterfinal spot against No. 30 Timea Bacsinszky.