NOVAK DJOKOVIC and Naomi Osaka, both ranked No. 1 in the world, cruised to straight-set victories at the BNP Paribas Open on Saturday night.

Djokovic beat Bjorn Fratangelo 7-6 (5), 6-2 in pursuit of a record sixth title in the desert. It was Djokovic’s 50th match win at the tournament, his highest total at any ATP Masters 1000 event.

Defending champion Osaka beat Kristina Mladenovic 6-3, 6-4 in her first attempt at defending a WTA Tour title.

Mladenovic upset Osaka in straight sets two weeks ago at the Dubai tournament. It was Osaka’s first match since ascending to the No. 1 ranking.

“I learn the most when I lose matches, and honestly, it was great that I got to play her again because I was able to learn from the mistakes I did back then,” Osaka said. “I just learned to be really positive and not give her anything.”

Djokovic needed 1 1/2 hours to beat Fratangelo and improve to 11-1 on the season. Afterward, Djokovic went over to greet former No. 1 Pete Sampras, who sat courtside.

“I think I tried too hard in the first set to impress him,” the Serb said.

Djokovic indicated he was rusty at the start, having taken over a month off after winning the Australian Open in late January.

“I was kind of waiting for him to do something with the ball rather than doing it myself,” he said. “That resulted in a very close first set. He was the one that was really aggressive and dictating the points from back of the court for entire first set.”

Venus Williams outlasted No. 3 seed Petra Kvitova 4-6, 7-5, 6-4 in the second round. It was just her eighth match of the year.

Kvitova served 10 aces and 10 double-faults in the 2 1/2-hour match. She became the highest seeded woman to lose so far.

“She’s been playing so well this year,” Williams said. “I just loved the battle.” (SD-Agencies)