SAITAMA, Japan, Aug 3 (Reuters) - Marco Asensio struck in an extra-time winner as Spain ended Japan's hopes of Olympic gold in men's football with a 1-0 (aet) victory, setting up a clash with Brazil in Saturday's final. Defending champions Brazil also had to struggle to make the final, beating Mexico 4-1 on penalties after the game ended goalless after extra-time. Brazil went close to settling their match against Mexico inside 90 minutes when Richarlison struck the post with a glancing header in the 82nd minute. But when it came to the shootout, they had their keeper Santos to thank for a fine save to keep out Eduardo Aguirre's spot-kick and after Mexico's Johan Vasquez hit the post, Brazil just need to keep their cool. "Playing the final of the Olympics is a dream," said Brazil coach Andre Jardine.
