EWE Baskets and Banvit could not be separated in their first leg, while PAOK and AEK only have small leads to defend.
CEZ Nymburk held a 31-point advantage in the second leg, but were still unable to avoid a Basketball Champions League exit.
After failing to make an impact at Lazio, Moritz Leitner has sealed a return to the Bundesliga with Augsburg.
The group stage of the Basketball Champions League is now complete, with four more teams sealing their places in the last 16.
CSM CSU Oradea held their nerve to secure an over-time victory over Kataja Basket in the Basketball Champions League, Martin Zeno starring.
EWE Baskets stayed on course for a top-two place in Group C of the Basketball Champions League, with Chris Kramer setting a new record.