Xabi Alonso’s Bayer Leverkusen extended their lead at the top of the Bundesliga on Sunday with a 1-1 draw at fellow high-fliers Stuttgart. Leverkusen playmaker Florian Wirtz scored a second-half equaliser as the visitors came from behind to steal a point from in-form Stuttgart and stren They remain the only club in the league who are still unbeaten this season, …