When an 18-year-old creates club a historic moment in a pivotal Champions League tie against Manchester City, it naturally attracts acclaim and attention.
During his first start in the tournament - and fifth appearance for the team - the young midfielder suitably impressed as the 15-time European champions claimed a three-nil round of 16 first leg advantage at the Santiago Bernabeu.
The teenager, who also made his Real debut in the play-off round a few weeks prior with a substitute appearance at Benfica, then assisted the Madrid side overcome the English Premier League side in the midweek return to secure a last eight place.
Aged 18 years and 226 days, Pitarch was the club's youngest player to begin two matches in the Champions League knockout stages, beating Brazil forward Vini Jr's record by a week and a half.
This talent is the most recent to emerge from the famed youth system and is rapidly cementing himself as one of Alvaro Arbeloa's most exciting young players.
He joined Madrid from CD Leganes in 2023, having previously been with Atletico Madrid and Getafe academies, and starting out for the under-19 side, where he quickly made a strong impression.
He worked his way up to the reserve side and it was during a friendly match in which they played against the academy's first team, then coached by the former defender, where the youngster is said to have caught the attention of the current Real boss, who took over from the previous coach in the new year.
Spanish media would later label the moment as "an instant connection," adding Pitarch stood out not only for his technical ability, but for the vitality, character and drive he brought to the side.
During the pre-season of 2025, former boss Xabi Alonso invited the youngster to train with the first team and awarded him playing time in the warm-up matches.
Yet, it was Arbeloa's appointment that proved the turning point in his career as he was introduced as a second-half replacement in each leg against Benfica that set up the clash with Pep Guardiola's team.
"I have dreamed of this each night before going to bed, the very first time I started playing football, each day you head to training and each day you play a match," stated Pitarch after his debut.
"I have just achieved my ambition with the greatest club in the planet and in the top tournament."
Given a first start in the Spanish league against Getafe - where he was for several seasons after moving from Atletico in 2018 - he has kept his place for the following four as fitness issues to Jude Bellingham and Dani Ceballos created an opening.
Pitarch has seized it with performances that have defied his youth and inexperience.
"He is a extremely fast footballer, and you can see what he's capable of," said Arbeloa. "He's incredibly dynamic, with great endurance, effort and movement."
Pitarch's mentality has also stood out to his coach.
"His standout trait is his character," added he. "He constantly demands the ball, and even under pressure, he doesn't feel it.
"I understand people are surprised to watch him make his debut in a Champions League match, but he's playing because I had complete confidence in him to perform what he usually does.
"Thiago will continue to get chances with the first team. It's a pleasure to coach a talent like him."
Born in Fuenlabrada, in the Spanish capital's community, and was raised fully immersed in the local game, moving through local academies before entering the club's renowned youth academy.
He possesses dual Spanish and Moroccan nationality, offering him the choice to play for either country at senior international level.
Under Fifa eligibility rules, players may appear for different countries at junior level without being locked in, with the final decision only final once they appear in a official full international.
He has featured for Spain at underage levels, turning out for both the U19 and under-20 sides, and participated in the 2025 Youth World Cup, where Spain reached the quarter-finals.
Despite this, he has not yet decided to either full national side, who are watching his progress with interest.
In a recent interview, Pitarch said: "I have not taken my final decision so far. My situation is great with the Spanish federation, but I'll make a conclusion in the near future."
This scenario echoes that of other dual nationality talents such as Real team-mate Brahim Diaz and Barcelona forward Lamine Yamal. Whereas 18-year-old Yamal chose La Roja, Diaz opted to represent Morocco.
For now, his attention is on making his mark in the Madrid lineup and rewarding Arbeloa's faith.
He featured for 74 minutes in the 2-1 victory at the Etihad, which sealed a five-one overall triumph and a quarter-final matchup with Bayern Munich.
He was replaced by fellow youth graduate in Manuel Angel to emphasise Arbeloa's trust in the next generation to help the club pursue trophies to come.
After his notable contributions so far on European football's biggest stage, Pitarch is tipped to be a central figure in that.
"Arbeloa treats me the same. We deal with it very naturally. I try not to think about it too much - I have to deserve my minutes on the pitch," he said following the success at Manchester.
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