Haller on scoresheet after cancer battle as Union knock Bayern off top

Sebastien Haller crowned his recent return from testicular cancer with an emotional goal for Borussia Dortmund on Saturday, as Union Berlin knocked Bayern Munich off the top of the Bundesliga with a dramatic late win over Mainz.Meanwhile in the capital, Union Berlin were working on their own fairytale as a late winner from US international Jordan Siebatcheu sent the high-flying minnows top of the table.