Bayer Leverkusen took another giant step towards their first Bundesliga title on Sunday after a 2-0 home win over 10-man Wolfsburg re-established their 10-point lead at the top. Bayern Munich, who have lifted the last 11 titles, hammered Mainz 8-1 on Saturday to temporarily trim the gap but Xabi Alonso’s unbeaten Leverkusen never looked like losing and now have just nine games left. They were helped by Moritz Jenz, wearing a mask due to a facial injury, receiving a second yellow card for a foul on Patrik Schick after just 28 minutes. Leverkusen, who had already hit the post through the mercuri…