Eto'o walked off to a roaring standing ovation from the Camp Nou, replaced by a long-haired 17-year-old Messi wearing number 30.

Messi received a lofted pass from Ronaldinho and chipped the ball over the keeper into the net, but the play was controversially called offside.

In a near-identical sequence, Ronaldinho scooped a pass over the defense to Messi. The young Argentine perfectly timed his run and delicately chipped the goalkeeper once again. This time the goal stood, marking his very first senior goal for the club. The iconic celebration followed, with Ronaldinho bending down to let Messi climb onto his back.