Carlos Alcaraz's dressing room behaviour at US Open emerges after private conversation

Tennis legend Andy Roddick has praised Carlos Alcaraz's composure after witnessing his behaviour before the US Open final. Alcaraz is due to take on Jannik Sinner tonight, with the winner securing the world No. 1 ranking as well as the final grand slam of the year.

Alcaraz and Sinner have remarkably shared the last seven major titles between them and are set to create history when they clash in a third straight grand slam final. The Spaniard will be keen to get revenge for his Wimbledon final loss to Sinner, having also battled back from difficulty to secure the French Open crown in June.

Despite the pressure surrounding the showdown in New York, former US Open winner Roddick has shared that Alcaraz remains untroubled by the size of the occasion. The 43-year-old recalled what impressed him most about Alcaraz after they spoke in the dressing room on the eve of the final.

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"I saw Alcaraz, I saw him, I don't know, 11:30am, like, getting ready," he said on his , describing his day watching the women's final on Saturday.

"I mean, he's not worried about how he's hitting the ball. Maybe there's a couple specific things he wants to work on for this specific matchup, but he doesn't need to hit much. Like, he doesn't need to. He's getting some bodywork done.

"He's so relaxed, dude. I envy confidence," Roddick admitted. "Oh, we were just talking, just, like, bull****. I think the world of him, but I walk into the training room, no one's in there. So he has no choice. He has to talk to me. Like, I'm the only option, but he's just fantastic."

Alcaraz booked his spot in the US Open final after beating Novak Djokovic in straight sets. Meanwhile, Sinner earned his place in a fifth consecutive grand slam final following victory over Canada's Felix Auger-Aliassime.

Looking at their head-to-head record, Alcaraz has claimed nine victories from his 14 encounters with Sinner, winning six of their previous seven battles.

However, he couldn't extend his winning run at Wimbledon and was compelled to save three championship points in their memorable French Open final. Given their past encounters, Alcaraz is eager to take lessons from their most recent showdowns.

"I always take things [from] the previous matches. If I'm playing against Jannik, obviously I'm going to take things about the last matches that I've played against him," Alcaraz said after his win over Djokovic. "The last one or the last three matches, I'm going to take note, and I will see what I did wrong, what I did great in the matches, just to approach the final in a good way."

Sinner is relishing the challenge of facing Alcaraz for the US Open crown and protecting his number one world ranking. The 24-year-old appears keenly aware of his and Alcaraz's recent dominance in the sport, having ruled tennis over the past two seasons.

"I love these challenges. I love to put myself in these positions," Sinner told reporters on Friday. "He's someone who pushed me to the limit, which is great, because then you have the best feedback you can have as a player. We have faced each other quite a lot now lately, so things are getting a little bit different.

"Always when we step on court, we are aware of maybe more things, because him or me, we try to prepare the match tactically and in different ways... It's great for the sport having rivalries, having hopefully great matches in front of us. And then we'll see. I'm someone who loves these challenges, and I love to put myself in these positions and to see how it goes."