Liverpool have had their fair share of painful moments in the Champions League final. European football’s showpiece event rolls around again on Saturday night, with Real Madrid up against Borussia Dortmund. Madrid are looking for a 15th title in the competition, having beaten Liverpool in their previous two finals. Probably the most painful of those two defeats was the most recent one. The Reds really should have won in 2022, but were thwarted by an unbelievable performance from Real goalkeeper Thibaut Courtois. That isn’t to say the first loss, in 2018, didn’t hurt too, though. The game which…