This article shows player statistics and all matches (official and friendly) played by the club during the 2018–19 season.

The season was the first since 2002-03 and 2004–05 without both veterans Xabi Prieto and Imanol Agirretxe, who mutually retired after the previous campaign's conclusion.

Note: Flags indicate national team as defined under FIFA eligibility rules; some limited exceptions apply.

Note: Flags indicate national team as defined under FIFA eligibility rules; some limited exceptions apply.

Note: Flags indicate national team as defined under FIFA eligibility rules; some limited exceptions apply.