Gaz Metan produced the big upset of the Qualifying Round.
The Romanian side had suffered a 69-67 home defeat to Ural Ekaterinburg in the first leg but travelled to Russia and outgunned their opponents, 97-92, to earn a spot in the Regular Season.
Pizza Express Apollon and Tofas SC Bursa had both won the first leg of their respective ties on the road last week and coupled their victories at home on Tuesday.
The Cypriots defeated Xion Dukes 96-90 and the Turkish side came from behind to beat Rakvere Tarvas 79-76.
In the last game of the night Joensuun Kataja, who were carrying a 12-point lead from the first leg in Finland, defeated Aliaga Petkim 77-64 in Turkey to punch their ticket to the Regular Season in style.
The EuroChallenge Regular Season tips off on 6 November.
EUROCHALLENGE 2012/13 REGULAR SEASON GROUPS
|GROUP A||GROUP B|
|Tofas SC Bursa (TUR)||Joensuun Kataja (FIN)|
|KRKA Novo Mesto (SLO)||Krasnye Krylia (RUS)|
|Michelin ETHA (CYP)||Keravnos Strovolou (CYP)|
|Pinar Karsiyaka (TUR)||CSU Asesoft Ploiesti (ROU)|
|GROUP C||GROUP D|
|Södertälje Kings (SWE)||Gaz Metan Medias (ROU)|
|BK Ventspils (LAT)||Khimik Yuzhne (UKR)|
|Norrköping Dolphins (SWE)||Tartu University Rock (EST)|
|Tampereen Pyrintö (FIN)||JDA Dijon Basket (FRA)|
|GROUP E||GROUP F|
|BCMU Pitesti (ROU)||BC Timisoara (ROU)|
|Belfius Mons-Hainaut (BEL)||Szolnoki Olaj (HUN)|
|Okapi Aalstar (BEL)||EWE Baskets Oldenburg (GER)|
|Paris Levallois (FRA)||Lami-Véd Körmend (HUN)|
|GROUP G||GROUP H|
|Pizza Express Apollon (CYP)||Hapoel Unet Holon (ISR)|
|BCM Gravelines Dunkerque (FRA)||Port of Antwerp Giants (BEL)|
|BC Minsk-2006 (BLR)||Telekom Baskets Bonn (GER)|
|SLUC Nancy Basket (FRA)||Armia (GEO)|