A Signal Iduna Park crowd of more than 81,000 got its own first-hand take on Der Klassiker, but the ultimate up-close and personal view of the contest was that of the referee, Sven Jablonski. He, on this occasion, was additionally kitted out with the innovative RefCam – a head-mounted video camera offering a unique, ref’s-eye perspective on the proceedings. Allowing us, in turn, to see this great tussle between Dortmund and Bayern in a somewhat different light.