Alcaraz was born in 2003, barely two months before Federer won his first major title at Wimbledon.

But, perhaps unsurprisingly, it is his compatriot Nadal－the record 21-time Grand Slam champion－h(huán)e most admires.

"I have always looked up to Rafa, I always watched his big moments and matches and learned a lot from that," said Alcaraz, who received a congratulatory call from Spain's King Felipe VI after his triumph in Miami.

"It is a great moment for me. It is the first tournament I watched, so lifting the trophy today is so emotional."

A year ago, when he made his Madrid debut, Alcaraz sat 120th in the world rankings. Fast-forward 12 months and the hottest young prospect in men's tennis has soared to a career-best sixth.

His four singles titles are the most on the ATP tour this year, as are his 28 match wins.

"It is great for tennis that we have such a new superstar that is going to win so many Grand Slams, that is going to be world No 1," said Germany's Zverev.

High praise

Stefanos Tsitsipas, last year's French Open runner-up, marvels at Alcaraz's polished, all-round game, acutely aware he is another significant obstacle in his own quest for Grand Slam glory.

"He inspires me a lot. I really want to be like him. I look up to him," said the 23-year-old Tsitsipas, at the forefront of the generation poised to take over from the 'Big Three'.

"I know he's at a young, early stage of his career. I can see him becoming big in a very short time. I'd really like to get to the level he is right now. I think he's one of the best players in the world."

Greek world No 5 Tsitsipas suggested the rapid rise of Alcaraz might rankle some of the sport's elder statesmen, but 35-year-old Nadal insisted he was pleased for his fellow countryman.

"Everybody knows the amount of confidence he has right now, the level that he can reach. I'm happy for him," said Nadal, who won his first major at Roland Garros in 2005, two days after his 19th birthday.

"Happy because we have an amazing player in our country for a lot of years to come."

On Monday in Rome, world No 1 Djokovic joined the chorus of praise.

"He's different, for sure," said the Serbian. "So far he's the best player in the world, no question, this year.

"For Roland Garros, he is definitely one of the big favorites."

Nadal said it was natural that Alcaraz was attracting attention.

"He is young, he is new, and all the new things are much more interesting than older things, without a doubt," said Nadal.

"When you see a new car, always looks better. When you see a new phone, always looks better than the old one. It's something that it's normal in this life. I can't complain at all about that."

AFP