Barcelona's Lionel Messi from Argentina, left, and Atletico's Gabi challenge for the ball during a Spanish La Liga soccer match between FC Barcelona and Atletico Madrid at the Camp Nou stadium in Barcelona, Spain, Saturday, May 17, 2014. (AP Photo/Emilio Morenatti)
Barcelona's Lionel Messi from Argentina, right, looks on during a Spanish La Liga soccer match between FC Barcelona and Atletico Madrid at the Camp Nou stadium in Barcelona, Spain, Saturday, May 17, 2014. (AP Photo/Emilio Morenatti)
Barcelona's Lionel Messi from Argentina puts his hand on his mouth during a Spanish La Liga soccer match between FC Barcelona and Atletico Madrid at the Camp Nou stadium in Barcelona, Spain, Saturday, May 17, 2014. (AP Photo/Andres Kudacki)
River Plate players, center, celebrate with teammate Cristian Ledesma, center, after he scored against Quilmes during an Argentine league soccer match in Buenos Aires, Argentina, Sunday, May 18, 2014. (AP Photo/Victor R. Caivano)