Jolly JBS Sibenik sprung a big surprise on Wednesday by winning 69-55 at Wisla Can-Pack Krakow 69-55.
The result keeps alive Jolly's faint hopes of progressing to the eighth-finals while also dropping Wisla to third behind Bourges in Group B.
Bourges won at previously unbeaten Ekaterinburg earlier in the day.
|Marta Fernandez had 15 points for Wisla Can-Pack.|
The top two sides in the groups will have home-court advantage in the eighth-finals, and Wisla play Bourges next week to determine who finishes second.
The visitors from Croatia stormed into a 19-13 lead by the end of the first quarter, but were unable to hold off the comeback by the Polish team with Wisla Can-Pack battling their way to a 33-30 advantage at half-time.
After outscoring Wisla 15-11 in the third quarter, Jolly led 50-49 with just under three minutes remaining when they blew the game wide open.
Tihana Juric buried a three-ball to spark a 10-2 that opened up a 60-51 lead.
Wisla got no closer than seven points the rest of the way.
Andja Jelavic had 19 points and eight rebounds to lead Jolly JBS Sibenka in victory and improve their record to 3-6.
Wisla are now 5-4.