MIAMI - World number one Carlos Alcaraz heads into this week's Miami Open looking to defend both his title and top ranking and admitting even he has been surprised by his dizzying rise to the top of the sport.
A year ago, the 19-year-old came to Miami on the back of wins on clay in Croatia and Brazil and hoping to make his mark on the hard courts. His victory in South Florida launched a remarkable year.
The highlight was his US Open triumph which made him the youngest player to become world number one and he returns to Miami after last week's win in Indian Wells, achieved without dropping a set in the tournament.
"It's all been very fast, when I got to Miami last year I was around number 20 and a year later I am coming in with the number one ranking. That is something very special. I fulfilled my dreams quicker than I expected," he told reporters on Tuesday.
Because of his victory in Miami last year, Alcaraz must win at the Florida event again if he is to hold on to his number one spot, but he says he feels no pressure in that regard or to meet newly raised expectations.
"I don't feel the pressure too much. I know the things I have to do. I need to play relaxed and not mind if I lose or if I play well or not," he said.
"My goal is always the same. To feel comfortable on court. To enjoy playing tennis and try to have great thoughts when playing. That is why I am playing at a good level. I am enjoying every single second and playing relaxed. That is what I am thinking about on court," he added.
Far from feeling the weight of following in the footsteps of the 'Big Three' of Novak Djokovic, Rafael Nadal and the now retired Roger Federer, Alcaraz says he is trying to draw lessons from their successes.
"You have to improve, you have to get better every day. That's why the big players, the Big Three, for example, did all through their careers - to improve every day a little bit," he said.
Alcaraz can expect plenty of support from the crowd in Miami, which includes many Spanish-speaking fans.
"It's so special to come back here and feel the same energy that I felt, for example, last year," he said.
"I have great supporters here, a lot of people supporting me. I remember last year it was unbelievable you know, with the crowd. I feel like I am at home, you know," he added.
The top seed will begin his title defence against Argentine Facundo Bagnis or a qualifier and could face two-time Miami champion and former world number one Andy Murray in the third round.
Alcaraz said he was full of admiration for the Scotsman and recently told him in a message during Murray's run to the final of the Qatar Open.