Montreal — Top-ranked Novak Djokovic survived two match points and rallied to beat Latvia's Ernests Gulbis 5-7, 7-6 (7), 6-1 on Friday night in the Rogers Cup quarter-finals.
It was the first time Djokoic survived match points against him since 2012 in Shanghai against Andy Murray. The Serb, the tournament champion in 2007, 2011 and 2012, has won 51 of 54 matches this year.
"You have to give credit to (Gulbis) for playing an excellent match," Djokovic said.
"He was always making me play an extra shot, and putting a lot of pressure on my second serve. I had a lot of chances and closed it out in the end, but he had a couple of match points and it would've been deserved if he had won this match."
Djokovic will face France's Jermey Chardy, a 6-7 (9), 7-6 (13), 7-6 (4) winner over American John Isner 6-7 (9), 7-6 (13), 7-6 (4) in the rain-delayed opening match.
Fourth-ranked Kei Nishikori of Japan beat fourth-seeded Spanish star Rafael Nadal of Spain 6-2, 6-4. The tournament winner last week in Washington, Nishikori topped Nadal for the first time in eight attempts.
"It took a long time to beat Rafa," Nishikori said.
"I don't usually like to play against him, but the last couple of matches — I had chances in Australia and in Madrid last year — so I knew I was close."
Nishikori was all over Nadal's serve, breaking twice in the first set and twice more in the second.
"Today, I was almost dominating everything, so I'm very happy," Nishikori said.
In the other quarterfinal, second-seeded Murray of Scotland faced 10th-seeded defending champion Jo-Wilfried Tsonga of France.
The Chardy-Isner match began nearly 2 hours late and was interrupted more than an hour in the second set by another shower.
Chardy fought off seven match points, five in the second-set tiebreaker. Isner missed a volley at the net and then hit wide on a service return on set point.
"If you start to think about match points or breakpoints, you start to be nervous," Chardy said. "It's the only way to miss the shot. In this match a lot of points were really important, with a lot of pressure."
The 6-foot-10 Isner had won 11 of his previous 12 matches, taking the title two weeks ago in Atlanta and finishing second in Washington.
"It was a crazy match," Chardy said. "We both had a chance. We did a lot of good points. We were serving both really well."