He is a 2.01 m (6 ft 7 in) tall swingman, as he plays at both the shooting guard and small forward positions.

One year later, Sastre agreed with Cajasol, where he would make his debut in the Spanish top-tier level Liga ACB, despite that he was loaned in his first year to Cajsol's affiliated team, CB Qalat of the Spanish 3rd-tier level LEB Plata.

Sastre played in Sevilla for five years, before signing with the Spanish club CAI Zaragoza.

[1] On July 2, 2021, he has signed with Lenovo Tenerife of the Spanish Liga ACB.

With Spain's junior national teams, he played at the 2009 FIBA Europe Under-18 Championship, the 2010 FIBA Europe Under-20 Championship, where he won a bronze medal, and he also won a gold medal at the 2011 FIBA Europe Under-20 Championship, which was held in Bilbao, while playing with the Spanish under-20 national team.