Borussia Dortmund began their bid to end Bayern Munich’s decade of Bundesliga dominance with a tough 1-0 win over Bayer Leverkusen on Saturday. Marco Reus scored the only goal of the game in nine minutes by squeezing the ball over the line after Karim Adeyemi’s shot was saved. Adeyemi is one of several signings for Dortmund under new coach Edin Terzic but he went off injured after just 23 minutes. Dortmund had chances to increase their lead but Leverkusen more than deserved an equalizer. Patrik Schick was twice denied by superb Gregor Kobel saves and the offside flag ruled out – marginally but…