Ymani fights for the ball with Oman's Qasim Sanjour during their Gulf Cup Olympic Team Under-23 soccer match in Doha Friday. Oman beat Saudi Arabia 4-3. In the other match the UAE beat Qatar 2-0. — Reuters BERLIN – A scintillating performance by Arjen Robben allowed Bayern Munich to demolish Hamburg SV 5-0 Saturday, while champion Borussia Dortmund struggled to beat Nuremberg 2-0. Dutch international Robben scored one goal and set up another for Daniel van Buyten, with Franck Ribery, last season's top scorer Mario Gomez and substitute Ivica Olic also on target as the hosts kept a clean sheet for the third straight game in all competitions. Dortmund was made to work much harder against aggressive Nuremberg and had to wait until early in the second half to celebrate when Mario Goetze in the box cut back for Robert Lewandowski to thunder in for the lead. Kevin Grosskreutz added another for the hosts 10 minutes from time with a deflected long-range effort. Both Bayern and Dortmund moved up to six points from three games, one behind Borussia Moenchengladbach, 4-1 winners against VfL Wolfsburg on Friday. Bayer Leverkusen has six points following its 1-0 win at VfB Stuttgart after Stefan Kiessling made the most of Stuttgart keeper Sven Ulreich's fumble to snatch the winner, with Michael Ballack again left on the bench. In an entertaining encounter Werder Bremen came from a goal down and led twice before finally beating Freiburg 5-3 with two goals in the dying minutes to also move up to six points.