|Full name||Sebastià Sastre Catalá|
|Date of birth||21 June 1994|
|Place of birth||Vilafranca, Spain|
|Height||1.72 m (5 ft 7 1⁄2 in)|
|Playing position||Attacking midfielder|
|2016||→ Hospitalet (loan)||14||(1)|
|* Senior club appearances and goals counted for the domestic league only and correct as of 15 May 2016.
Born in Vilafranca de Bonany, Balearic Islands, Sastre grew in the youth ranks of local giants RCD Mallorca. On 14 December 2011, whilst still a junior, he made his official debut with the first team, playing 31 minutes in a 0–1 home loss against Sporting de Gijón for the season's Copa del Rey.
Sastre subsequently spent the following campaigns appearing mainly for the reserves in Segunda División B. On 7 June 2015 he made his Segunda División debut, coming on as a late substitute for fellow youth graduate Damià Sabater in a 0–2 away loss against CD Mirandés.
- Muñiz guía la eliminatoria para el Sporting en Mallorca (Muñiz puts tie in favour of Sporting in Mallorca); Diario AS, 14 December 2011 (in Spanish)
- El Mirandés pone "el broche" a su mejor temporada en Segunda (Mirandés puts the "finishing touch" to its best season in Segunda); Marca, 7 June 2015 (in Spanish)