Oscar Mingueza made his senior-team debut, playing the full 90 minutes.
Most fans on OneFootball even named him the Man of the Match.
Juan Miranda, who's leaving Barcelona for Real Betis in July, scored Spain's third goal of the night.
As a reminder, Spain played their youth squad due to Sergio Busquets contracting Covid-19. Some of the team members had to self-isolate.
Luckily, no other senior-side player has tested positive for the coronavirus, so we may still see Spain's strongest setup at Euro 2020.
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OFFICIAL: Barca refuse to extend Miranda deal, youngster joins Betis
Barcelona have officially confirmed that they have decided not to renew the contract of Juan Miranda, with his deal set to expire on June 30.
Real Betis, meanwhile, have announced that the left-back has signed a contract with the Verdiblancos until 2024. Barca will get 40% of a future sale and the right of first refusal on re-signing him.
Miranda is a product of La Masia and he joined Betis on loan for the 2020/21 season, playing 25 matches and recording 2 goals and 2 assists.
In total, Juan played only 4 matches for Barca's first team.
What Busquets' Covid situation means for Spain: explained
On Sunday, it was officially confirmed that Sergio Busquets had contracted Covid-19.
The Barca player left the national team in an ambulance and went home to self-isolate despite showing no symptoms, according to Mundo Deportivo.
5 other Spanish players are said to be self-isolating. They train individually.
On Tuesday, Lithuania will take on Spain U21 instead of Luis Enrique's side in a friendly game.
On Thursday and Friday, Busquets will take the PCR tests to find out whether he'll be able to play at Euro 2020.
Of course, the test results of those training individually matter too. If something goes wrong, Luis Enrique may be forced to replace the Covid-infected players before the tournament kicks off.
