Ref Felix Zwayer has defended his performance for Bayern Munich's victory against Borussia Dortmund.

Dortmund's players and manager Marco Rose were left fuming over a number of decisions that went against them in the 3-2 defeat on Saturday night.

In particular, they were left aggrieved at a contentious handball verdict against defender Mats Hummels that resulted in Robert Lewandowski converting the winning penalty.

In the aftermath, BVB midfielder Jude Bellingham referenced Zwayer's involvement in a past match-fixing scandal.

But of the Hummels call, the ref told Sky Deutschland: "The situation was a standard corner kick.

"I see in the game that it's about a touch by Hummels. The question for me was: Is the arm stretched away from the body or not? In real time, it was not clear whether his arm was moved towards the ball.

"I checked it with [VAR officials] in Cologne and then the arm position was checked.

"The video assistant made an assessment for himself and said that Hummels had his arm away from the body in an unnatural position.

"In the end, he clearly deflected the ball with his elbow and I came to the decision that is was a penalty."

Zwayer checked replays of the incident on the pitchside VAR monitor at Signal Iduna Park before awarding the spot-kick but Dortmund were still incensed.

Their mood wasn't helped by being denied a penalty when Marco Reus and Lucas Hernandez tangled in the Bayern box.

But Zwayer said: "It was a contact in the upper body area, which is allowed to happen even at high speed.

"The situation is not black and white, I decided against the penalty because of my line of sight.

"It wasn't necessary for me [to consult VAR] because I had a clear view. If the video assistant had a second opinion he would have told me through the earpiece."