Dortmund's Polish striker Robert Lewandowski and Bayern Munich's Belgian defender Daniel van Buyten vie for the ball during the German first division Bundesliga football match Borussia Dortmund vs Bayern Munich in the German city of Dortmund on May 4, 2013. AFP PHOTO / PATRIK STOLLARZ RESTRICTIONS / EMBARGO - DFL RULES TO LIMIT THE ONLINE USAGE DURING MATCH TIME TO 15 PICTURES PER MATCH. IMAGE SEQUENCES TO SIMULATE VIDEO IS NOT ALLOWED AT ANY TIME. FOR FURTHER QUERIES PLEASE CONTACT DFL DIRECTLY AT + 49 69 650050.