Thomas Muller's first-half brace ensured Vincent Kompany got off to a winning start at Bayern Munich as they beat Ulm 4-0 in the DFB-Pokal first round.

Kingsley Coman and Harry Kane came off the bench to add some gloss to the scoreline as Ulm rarely showed a threat against a dominant Bayern side.

The hosts did almost cause an early shock though, as Maurice Krattenmacher was left unmarked at the far post, but he could not adjust quickly enough and turned his first-time shot wide.

Joshua Kimmich then unlocked Ulm's defence with a throughball into Stanisic, who did brilliantly while off-balance to set up Muller for his first of the game.

And just two minutes later, the forward had his second – Christian Ortag was drawn to Serge Gnabry's run, leaving Muller to tap it into the empty net.

The hosts showed some fight in the second half, with Dennis Chessa forcing Manuel Neuer into a low save before Bayern finally got their third in the 79th minute, as Michael Olise's trickery set Coman up for a close-range finish. 

Kane had a goal ruled out for a foul on the goalkeeper, but he was not to be denied as he headed in a fourth with the final touch of the game. 

Data Debrief: Muller at the double

Muller is off the mark for the season, and he wasted no time in doing it. He scored his earliest brace for Bayern (14 minutes) in his 708th competitive match for the club.

It was a clinical performance from the 34-year-old, who scored with both of his shots on target as he registered an expected goals of 1.42, and only Jamal Musiala (eight) had more touches in the opposition box than him (seven).