Arsenal travel to Atletico Madrid on Wednesday with a place in the Champions League final now within reach, but this semi-final first leg will demand far more than memories of their earlier win over the Spanish side.
Mikel Arteta’s men beat Atletico 4-0 during the league phase, yet a knockout tie at the Metropolitano is a different type of examination.
Diego Simeone’s side are too experienced, too stubborn and too emotionally charged at home for Arsenal to treat that previous result as any guide.
This is a chance for the Gunners to reach their first Champions League final since 2006, and that alone should sharpen the focus.
Arsenal have spent years building towards nights like this, moving from hopeful contenders to a team now expected to compete at the highest level.
That progress means little if they cannot produce the level required when the stakes are this high.
The 1-0 win over Newcastle United at the weekend helped steady the mood after a difficult run, but it did not erase every concern.
Arsenal have still been inconsistent in recent weeks, and that kind of unevenness cannot follow them into a Champions League semi-final.
Against Atletico, one sloppy spell could change the tie.
One poor reaction to pressure could leave them chasing the game back in North London.
There is also the physical concern, with Kai Havertz and Eberechi Eze both withdrawn against Newcastle, although Bukayo Saka’s return offers a major lift.
Arteta will need freshness, discipline and bravery in his selection because this is not a game for caution disguised as control.
Atletico arrive after returning to winning ways against Athletic Club, but their recent form has been patchy enough to give Arsenal encouragement.
Even so, Simeone’s team have shown in this competition that they can survive difficult moments and punish opponents ruthlessly.
Their quarter-final win over Barcelona underlined that quality, especially when they were forced to resist pressure and protect a narrow advantage.
Arsenal must therefore be calm without becoming passive, aggressive without losing structure and ambitious without becoming careless.
A draw away from home would not be a disaster, but this Arsenal side should not travel to Madrid simply to survive.
They have the defensive record, the European form and the individual quality to impose themselves.
The challenge is to prove that recent wobbles have not shaken their identity.
This is the type of night that can define a generation of players.
If Arsenal want to be remembered as more than nearly men, they have to earn that status in places like Madrid.
