zlatanov

well, what mrki said only we'll need 3 such balls with 2 teams in each, assuming that Sevilla would go to pot 2 and AEK pot 4, something that will be known for sure once all the other games are played, the winners are known, and then we can compare their coefficients with those of Sevilla and AEK.

Let's say Sevilla's coeff. is high enough for pot 2, which it is, and AEK's - for pot 4.
Now let's assume - just an example - that the team with highest coeff in pot 3 is Benfica. This means that Benfica would move to pot 2 if Sevilla goes out, with AEK joining pot 4.
At the same time, let's assume - again just an example - that Stuttgart is the team with the highest coeff in pot 4 i.e. they would move to pot 3 if Sevilla goes out and AEK moves to pot 4.

Then all we need to do is have 1 ball in pot 2 like this - Sevilla/Benfica, 1 ball in pot 3 - Benfica/Stuttgart, and one ball in pot 4 - Stuttgart/AEK

Capito?

P.S. If AEK's coeff is high enough for pot 3, then we'd need 2 balls, and not 3, with 2 teams in each one.

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