4. Count Atletico Madrid, and Diego Simeone, out at your peril - as insurmountable as their task looks at the moment.
It was a strangely lacklustre performance from Atletico – a throwback to earlier in the season where at times Los Colchoneros looked disinterested and completely listless. It was, all said and done, the very antithesis of a Diego Simeone performance.
They will not be the same in the second leg. They surely can't be this poor. This defeat, the earlier defeat at the Vicente Calderon (which they thought would be the last derby in that venerable old stadium), the ignominy of being stopped by the same team in three of the last four years, these are not things that Diego Simeone will take lightly.
His side certainly has the quality to trouble any side, and he relishes the challenge of motivating his side when the chips are down when the odds are stacked up high against them, when the whole world thinks they can’t do it. Make no mistake, they are well and truly up against it, and they will need to improve markedly to trouble Real Madrid in the second leg... but a raucous Vicente Calderon and a pumped up Diego Simeone will be there to ensure that Real Madrid don’t get a ticker-tape parade into their third final in four years.