PARIS -- For the second time in his unparalleled French Open career, Rafael Nadal owns a 31-match winning streak at the clay-court Grand Slam tournament.
Now he'll try to get to 32 for the first time.
The eight-time champion at Roland Garros equaled his longest run at Roland Garros with a 6-2, 7-5, 6-2 victory over 65th-ranked Leonardo Mayer of Argentina in the third round Saturday.
Afterward, Nadal thanked the Court Philippe Chatrier crowd in French for supporting him and told them "a lot of memories come through my mind" whenever he plays in that stadium.
Nadal revealed after the match that his back is bothering him and forcing him to hit slower serves.
"During my career, I had (a) few problems. ... Hopefully will not be (the) case" the rest of the way in Paris, Nadal said.
"I served more slowly since I started feeling the pain," he said, noting that he's worn tape on his back for extra support.
There are no artificial lights at the clay-court Grand Slam tournament. The match will resume Sunday, with No. 7 Murray serving.
Murray -- who got both upper legs massaged by a trainer during fifth-set changeovers -- twice was two points from victory while leading 6-5 as Kohlschreiber served, but couldn't get closer.
Kohlschreiber then held a break point at 6-all that Murray erased with a backhand winner.
Kohlschreiber won the first set 6-3. Murray took the next two 6-3, 6-3, and Kohlschreiber took the fourth 6-4.
The last time Nadal won 31 in a row in Paris, he failed to get No. 32, losing in the fourth round in 2009 to Robin Soderling. That remains the Spaniard's only defeat in 63 matches at the tournament.
He has dropped only 19 games this year, heading into a match against 83rd-ranked Dusan Lajovic of Serbia, who is in only the second Grand Slam tournament of his career and beat Jack Sock of the United States 6-4, 7-5, 6-3.
Before this French Open, the 23-year-old Lajovic had a 10-21 career record in tour-level matches, never winning two in a row.
The top-seeded Nadal made only 10 unforced errors against Mayer -- two in the first set, three in the second and five in the third. Still, there were moments when the match was far closer than the final score indicates, including when Mayer was serving at 5-all, deuce, in the second set.
After Mayer's forehand sailed long to set up a break point, Nadal converted it by stretching to scoop a backhand lob. As Mayer watched the shot sail overhead, he waved his left hand to signal to the ball to go out, then rolled his eyes when it curled in. At the other end, Nadal pumped his fist, ahead 6-5 in that set and well on his way to reaching the fourth round for the 10th time in trips to Roland Garros. Roger Federer, who won his third-round match Friday, is the only other man to make it to the final 16 in Paris that many years in a row.