Alcaraz: "I've improved my service to get more free points".

Carlos Alcaraz won without too much trouble against Andrea Vavassori on Thursday at the ATP 500 Rotterdam.

He had a few words for his opponent, who said the Spaniard was unplayable during the match: "He's also very nice.

It's great to have players like that here, who spread positive vibes.

I didn't expect to win like that, but it's true that I played very well, I was very focused on him because he can play at a high level in singles.

The last time we played each other, it was a very close match. I told myself that I had to do the right thing, by concentrating on myself."

Alcaraz reacted to Richard Krajicek's statement that he could save energy with his serve: "That's what I'm aiming for.

That's why I've improved my service, so I can earn more free points. I'm working on it. I hope to keep improving to earn those free points, but I think it's time to get there."

Alcaraz will face Pedro Martinez in the evening session of the Rotterdam quarter-finals this Friday.