Baza, a left-footed centre-back, made his first appearance in Barcelona colours against Vic a few days earlier before featuring against senior side Atletic Sant Just on Friday, a tough test against opponents with far greater experience, some of them twice his age.
Despite having trained with his new teammates for only a matter of days, the 16-year-old put in a composed display in a match Barcelona's youth side lost 1-2.
The physical difference and greater match sharpness of Atletic Sant Just ultimately proved decisive, but Baza's overall impression in his debut was positive, particularly given the gulf in experience between the two sides.
He completed a notable performance for a first appearance with so little time to adapt, showing decisiveness in interceptions, quick covering runs, good physical condition and composure in possession from the back.
Now in his first year as a Juvenil, at just 16 years old, Baza's arrival forms part of Barcelona's broader strategy of investing in young talent for the future, with his profile, a powerful, left-footed centre-back standing over 1.90 metres tall, fitting the priorities of a scouting department that has restructured its recruitment operation in recent months to stay ahead of rival European clubs in the race for promising youngsters.
The signing follows a run of similar additions to Barcelona's academy this year, including Jesse Bisiwu, Josue Caicedo, Patricio Pacifico, Onstein and Ajay Tavares, alongside Spanish recruit Joni Hernandez from the Canary Islands, as the club looks to build long-term depth across its youth ranks.
Whether Baza's development allows him to progress to the Juvenil A side under Pol Planas remains to be seen over the course of the season, but he has already moved into La Masia full-time, where his integration into the club's structure will continue gradually.
In a notable family connection, Baza is a cousin of defender Jonathan Tah, who was on Barcelona's radar last season before ultimately signing for Bayern Munich, a link that has added extra intrigue to the teenager's arrival among Barcelona's academy watchers.