Before joining Argentinos Juniors, Thiago Santamaría had a stint in youth football at D10 Football Club, located in Pilar, Buenos Aires. D10 is known for being a development club that works with young talents, offering a platform for emerging footballers to demonstrate their ability and potential.
During his time at D10 Football Club, Santamaría showed his qualities as a promising midfielder. He stood out for his technical ability, vision and ability to connect the play between defence and attack. These characteristics caught the attention of scouts and bigger clubs, eventually allowing him to make the jump to a higher profile team like Argentinos Juniors.
The experience at D10 was fundamental for his development, as it allowed him to gain competitive experience and hone his skills in a training environment. This stage at D10 was key to building a solid foundation that has allowed him to advance in his professional career.