Jamal Musiala’s hat-trick led Bayern Munich to a 4-0 thrashing of Mainz and into the last 16 of the German Cup. The young Bayern talent was quick to break the deadlock and was already on target in the second minute, adding a second goal in the 37th. Leroy Sané also put his name on the scoresheet before Musiala completed his hat-trick before the break. Union Berlin, meanwhile, joined the list of eliminated Bundesliga clubs as they were stunned 2-0 by third-division side Arminia Bielefeld. Elsewhere, Hoffenheim defeated Nuremberg 2-1, while Dynamo Dresden scored in the 10th minute of stoppage-ti…