Mastantuono's Hat-Trick Eclipses Messi: Fiorentina's Rising Star

Real Madrid sent a prospect on loan. Fiorentina may have just unveiled a phenomenon.

At 19 years and 28 days, Mastantuono announced himself to Serie A with a ruthless hat-trick on Friday night, dragging Fiorentina to a 4-2 win at Venezia and straight into the record books. In one explosive evening, the Argentine winger not only delivered his new club their first points of the campaign, he also stepped past Lionel Messi in the history books.

Messi’s long-held mark as the youngest Argentine to score a hat-trick in Europe’s top five leagues is gone. Mastantuono is now the man at the top of that list – and he has done it 231 days younger than Messi was when he hit his first treble for Barcelona against Real Madrid in March 2007.

From early shock to teenage takeover

For Fiorentina, this was a night that could easily have gone the other way.

Venezia struck first in the 22nd minute, when Akor Adams finished off a sharp move sparked by American midfielder Gianluca Busio. The hosts had the lead, the crowd, and the momentum. Fiorentina looked vulnerable, still searching for rhythm in a stuttering start to the season.

Then Mastantuono snapped the game in half.

On the half-hour mark, he struck twice in the space of just one minute and 38 seconds, flipping the scoreboard and the mood in the stadium. In that blistering burst, the Real Madrid loanee showed why Europe’s giants fought for his signature: timing, composure, and a cold edge in front of goal that belies his age.

By then, he had already become the youngest Fiorentina player ever to score multiple goals in a single match. He was not finished.

Six minutes from time, with Venezia chasing and space opening up, Mastantuono completed his hat-trick. The teenager sealed the 4-2 victory, killed off the contest, and etched his name into Serie A history in the same movement. The win lifts Fiorentina to 15th in the table and, more importantly, injects life into a season that had started to feel heavy far too early.

From River Plate prodigy to Real Madrid reality check

This performance did not come out of nowhere. It felt like a reminder.

Mastantuono first burst into global view when he made his senior debut for River Plate at just 16, instantly tagged as one of the brightest talents of his generation. In the summer of 2025, Real Madrid beat Paris Saint-Germain to his signature, tying him down to a six-year deal and underlining just how highly they rate him.

That same month, he became the youngest player to represent the Argentina national team. The trajectory looked clear: wonderkid, Madrid, Albiceleste, superstardom.

Then came the grind.

His first season at the Bernabeu was a struggle. Minutes were hard to come by, confidence even harder. Three goals in 35 appearances told the story of a winger still adapting to European football, the pressure of Madrid, and the demands of a club that rarely waits for anyone to grow. The dip in form ultimately cost him a place in Argentina’s World Cup squad.

For a player used to fast-forward, it was a brutal pause.

Rebuild in Florence, records in Venice

That is why this loan to Fiorentina matters so much. Italy offers him something he badly needed: a stage, responsibility, and the space to make mistakes and still be trusted.

Five games into his spell in Florence, he has already matched his entire goal tally from last season at Madrid. Three goals, all competitions. All three arriving in one unforgettable night at Venezia.

This is not yet a completed redemption arc. It is something more fragile and more interesting: the first real sign that the player who lit up River Plate and seduced Real Madrid’s scouts is resurfacing in Europe.

Fiorentina, who desperately needed a spark to ignite their Serie A campaign, suddenly have a match-winner on their hands. Mastantuono’s treble not only delivered three points; it shifted the mood around the club and around the player himself.

The national team will be watching. So will Madrid.

If he keeps finishing with this kind of conviction and drives Fiorentina up the table, the question will not be whether he returns to the Argentina setup. It will be how long before he walks back into it as a central figure, not just a precocious footnote to Messi’s legacy.