Written byDavid Smith Last month Barcelona fell short again in Europe’s premier competition. The 3-2 aggregate loss to Atletico Madrid continues their elusive quest for la sexta. For the past 11 years, the Champions League has been Barca’s Achilles’ heel. The Blaugrana have been knocked out in various different circumstances. Be it through a red card, being the wrong end of a comeback or a last-minute goal, these shortcomings have become a tough pill to swallow at the end of every campaign.