Born in
Bilbao,
Biscay, Corino was a product of
Athletic Bilbao's prolific youth system at
Lezama, spending nearly three seasons with the
reserve side in the
Segunda División to kickstart his senior career. On 18 October 1994, one week after his 20th birthday, he made his debut with the main squad, playing six minutes in a 3–2 loss against
Newcastle United at
St James' Park in the
UEFA Cup (
3–3 aggregate win). In the 1996 January
transfer window, Corino was loaned to
CP Mérida also in
La Liga, appearing regularly with the
Extremadurans during
the campaign and still managing to score three goals, but with his team being relegated. He then returned to the
San Mamés Stadium for his only full
season with the club, featuring sparingly (15 games, 18 in all competitions) as it
qualified for European competition after finishing sixth. being an undisputed starter and
suffering relegation in his second year. Subsequently, he represented
RCD Espanyol until January 2000 before joining Athletic neighbours
Real Sociedad, where he had several run-ins with Welsh manager
John Toshack. experiencing his best year in his
first season with five goals in 28 matches as the
Madrid outskirts side finished in 11th position in the main tier after a spectacular effort in the final months. In his final two campaigns, however, they were consecutively relegated to
Segunda División B, and the player retired from the game aged 29 due to recurrent injury problems, having made 297 appearances as a professional. ==International career==