|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.
He appeared in Segunda División 149 games during six seasons (five goals), representing in the competition Numancia (two spells), Hércules and Cartagena. In La Liga, he played for Athletic Bilbao and Osasuna.
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 appearing for the B-side. From 2003 to 2005, 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, he signed for Hércules CF in the second level. After one sole season he joined another club in that tier, 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 (in Spanish)