Guardiola tells Barca to finish job against Real

Spanish leader gets timely wake-up call from upstart Real Sociedad

BARCELONA - Barcelona coach Pep Guardiola says his team's weekend defeat by Real Sociedad was a timely warning ahead of Tuesday's second leg of its Champions League semifinal with Real Madrid, which it leads 2-0.

Last week it came out on top in a stormy first leg in Madrid that was characterized more by cynical challenges and play-acting than on-pitch excitement.