Bourges, who thrashed MiZo Pecs on Wednesday, also finished 7-3 but sealed first place in the standings by virtue of a superior goal differential in their games with Avenida.
Wisla finished 6-4 and ended up in third spot with MiZo coming in fourth.
Le'Coe Willingham had 24 points and 17 rebounds for Avenida, who went in front to stay in the fourth quarter when Anke De Mondt's three-pointer gave them a 14-11 lead.
Avenida won the battle of the boards 45-27.
They also shot much better, hitting eight of 20 from long range while Wisla drilled only two of 11.
Jose Ignacio Hernandez, Halcon Avenida coach:
I´m very happy because we finished second in our group and it´s a big step for our club in EuroLeague. We have to play against CSKA but if we play hard I think we can beat them, especially playing in our gym."
Le´Coe Willingham, Halcon Avenida player:
"It was a good game for me but I always play hard for the team. CSKA is a team with fantastic players but we play at home first and this is very important for us."
Wojciech Downar-Zapolski, Wisla Can Pack coach:
"Halcon Avenida played a good game and I think that the key [for our loss] was that we didn´t control the rebounds."
Marta Fernandez, Wisla Can Pack player:
"We Knew that it was very difficult to win here. I prefer to play against Euroleasing but I think that CSKA is not playing so well this season."