By James Cormack Bayern Munich must swiftly dust off a crushing domestic defeat as their Champions League knockout stage campaign begins away at Lazio on Wednesday night. Thomas Tuchel’s side were emphatically beaten by Bundesliga leaders Bayer Leverkusen 3-0 on Saturday as Xabi Alonso’s majestic outfit opened up a five-point lead at the summit. While Leverkusen’s advantage certainly isn’t insurmountable, Bayern risk enduring their first trophy-less season since 2011/12. They may have to embark on a quite incredible continental run to achieve silverware. Die Roten were once again imperious in …