Messi hurts left thigh in Super Cup
Messi was replaced by Cesc Fabregas at halftime in the first leg of the Spanish Supercup at the Vicente Calderon Stadium. New signing Neymar scored the equalizer following David Villa's opener for Atletico.
Barcelona says ''Messi was substituted due to precaution for pain in the back of his left thigh caused by a knock.''
The Argentina star had a minor muscle injury in his left leg last week but was cleared in time for Sunday's Spanish league opener and scored two goals in a 7-0 rout of Levante.
Messi missed several games at the end of last season with a right hamstring strain.