FOR the second night running, the Champions League delivered an intriguing tie that kept the stay-at-home crowd on the edge of their sofas and underlined the competition’s ability to thrill. Leipzig, the much-discussed product of corporate football, edged their way to the last four of the Champions League at the expense of a club that has lived on the fringe of the elite for the best part of a decade. To some extent, Atlético’s defeat signals the end of an era, they don’t seem to have the appeal of old even though they have all the ingredients of the Simeone way, as their two victories over Liverpool in the round of 16 suggested. Atlético finished the La Liga season in third place after two…