Second-seeded Carlos Alcaraz of Spain overcame some rusty moments on his serve to beat Nicolas Jarry of Chile 7-5, 6-1 and reach the third round of the Paris Masters on Tuesday.

The Spaniard was troubled by Jarry's strong forehand at times. The Chilean broke his serve in the ninth game and held for 5-5, but Jarry double-faulted in his next service game to lose the first set.

"It was a little bit complicated, really happy to get through the first set," Alcaraz said. "I have to get used to the speed of the court. It's really fast for me."

Alcaraz saved a break point in the third game of the second set with an ace and broke for a 4-1 lead with a crisp forehand winner.

Serving for the match, Alcaraz saved another break point with an ace to make it deuce and win the next two points, clinching victory when the erratic Jarry's two-handed backhand clipped the net and went out.

"He's a really dangerous player on these courts," 21-year-old Alcaraz said. "I'm super happy to win here. It's been a great year so far."

Seventh-seeded Casper Ruud of Norway, a three-time Grand Slam runner-up, started well before losing 7-6 (3), 3-6, 6-4 to unseeded Australian Jordan Thompson.

In an earlier second-round match, No. 6 seed Andrey Rublev of Russia lost two tiebreakers and his temper as his hopes of qualifying for the Finals took a hit.

Rublev lost 7-6 (6), 7-6 (5) to Francisco Cerundolo of Argentina and was so frustrated at one point in the second set that he smashed his racket against his left knee at least seven times in succession and made it bleed.

Top-seeded Jannik Sinner of Italy has withdrawn from the tournament due to a virus.

"I'm very disappointed to tell you that I am not able to play here at this tournament. I came here very early to prepare and then I felt sick," Sinner said in a video message shared by the organizers. "I have a virus at the moment, which will pass in the next two or three days. Body-wise, I am not ready to compete."