Carlos Alcaraz insists his recent ankle concern is nothing serious and that he will "be at 100%" for this year's US Open.

The Spaniard is seeking his second triumph at Flushing Meadows, where he was victorious two years ago, as well as a third major of the season following his success at the French Open and Wimbledon.

Although, there were briefly question marks over Alcaraz's participation in the year's final slam after he pulled out of practice on Friday with an ankle injury.

Nevertheless, he said the reason for not continuing the session was precautionary above anything else.

"After a few hours after finishing my practice, I have not felt anything and everything is fine and under control," said Alcaraz, who begins his campaign against Li Tu on Wednesday "I think it is not going to be anything serious.

"We will take care of it in the next few days and we will be extra cautious. I think it was just a scary moment, but I am sure I will be at 100%."

Alcaraz also reflected on his Olympic gold medal match against Novak Djokovic earlier this month, in which the Serb avenged his Wimbledon showpiece defeat to complete a career golden slam.

The Spaniard admitted it was a defeat that hurt, but made him more determined to go the extra step in four years' time.

"It was one of the most important finals of my career, my life," he said. "I know the Olympic Games is every four years, so I don't know if I'm going to have another chance to win the gold. I'm going fight for it, for sure, at the next Olympic Games.

"It was a difficult moment [for me to] deal with, losing the gold medal in a really close match when I had opportunities, but in front of me, I had a really good player that day.

"[Djokovic] was fighting for the same thing as me and he deserved it, and days after the Olympics, I realised that I won the silver medal. It was a great achievement for me."