Dortmund jumped to fifth place at the expense of Hamburg, who lost 1-0 at home to Cologne.

Arminia are close to relegation as they lie third from bottom with 27 points.

Sebastian Kehl gave the hosts a first-half advantage at Signal Idunda, before Tamas Hajnal and Nelson Valdez tripled the lead on 53 and 69 minutes respectively.

Zidan replaced Valdez in the 71st minute to provide Germany midfielder Kehl with his second of the game only one minute after the substitution.

Tinga added the fifth on 84 minutes and Zidan completed the damage three minutes from time.

Watch Zidan's contribution here