Barcelona kid Marc Guiu, 17, scores the winner just 30 seconds after coming off the bench for his debut as Xavi unearths another gem to put his side a point behind Real Madrid
PETE JENSON: Barca's teenage substitute Marc Guiu scored late in the second half on his debut to secure a 1-0 home win over Athletic Bilbao in LaLiga, sending Xavi's side up to third.