Arjen Robben: 'Kaiserlautern game was tough'

Bayern Munich winger Arjen Robben has said that their 4-0 win against Kaiserlautern was harder than the scoreline suggests.

The Dutch star, who scored two goals as he captained Juup Heynckes's side on the night, said that the game was more difficult than it appeared.

"Four-nil sounds easy but it was tough," admitted Robben.

"I'm proud of the lads. We worked very hard."

A further brace from Claudio Pizarro was enough to send Bayern through to the last 16 of the DFB-Pokal.