|Full name||Unai Expósito Medina|
|Date of birth||23 January 1980|
|Place of birth||Barakaldo, Spain|
|Height||1.75 m (5 ft 9 in)|
|Playing position||Right back|
|2002–2003||→ Numancia (loan)||38||(2)|
|* Senior club appearances and goals counted for the domestic league only and correct as of 12 May 2013.
† Appearances (Goals).
Born in Barakaldo, Biscay, Expósito graduated from Lezama, Athletic Bilbao's renowned youth academy, and made his debuts for the first team during the 1999–2000 campaign while also representing the B-side. From 2003–05, after a season-long loan with CD Numancia in the second division, he represented neighbours CA Osasuna also in La Liga.
In 2005 Expósito returned to Athletic as a full member of the main squad but, after making just three appearances in 2007–08, joined Hércules CF in the second level. After one sole season he joined another team in the category, freshly promoted FC Cartagena.
- 'Cuando sales fuera, ves que también hay vida después del Athletic' ('When you leave, you see that there is life after Athletic'); Diario Siglo XXI, 29 May 2007 (Spanish)