Messi 'spark' back for Barca

Superstar striker snipes a pair to pace 3-1 triumph over AC Milan

Barcelona coach Gerardo Martino has said he never doubted Lionel Messi would soon be back on the scoresheet as the Argentine struck twice to put Barcelona into the last 16 of the Champions League with a 3-1 win over AC Milan.

Messi had failed to find the net for three consecutive games after scoring Barca's equalizer in the 1-1 draw between the sides in Italy two weeks ago.