(AP Photo/Alvaro Barrientos)

BARCELONA, Spain (AP) Lionel Messi is in doubt for Barcelona's Champions League match against Inter Milan on Tuesday due to a leg injury.

The Argentina forward was substituted in the 75th minute of Barcelona's 1-1 draw at Athletic Bilbao on Saturday because of a problem in his left thigh. Messi was scheduled to undergo medical tests Sunday.

Barcelona coach Pep Guardiola says his "first feelings are not very good" about Messi playing in the group game against Inter.

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