Lowly Bayer Leverkusen scored five times in the second half on Sunday in a 5-0 demolition of Union Berlin who as a result lost the Bundesliga lead for good to champions Bayern Munich. Robert Andrich opened the scoring in the 46th when he volleyed home a corner-kick at the far post against his former club. Moussa Diaby then added a 56th and 58th minute brace, the first after Union goalkeeper Lennart Grill, standing in for injured Frederik Rönnow, lost the ball to Jeremie Frimpong and the second on the counter against the collapsing visitors. Adam Hlozek got the fourth in the 67th with a classy …