Tofas prevailed in a thrilling game, 95-94, to inflict a first loss of the season on their opponents.
American point guard Steven Burtt led the way for the hosts with 25 points, hitting five of his nine shots from beyond the arc. His compatriot Joshua Heytvel added 24 points on 9-of-14 shooting from the floor.
Jon Diebler and William Thomas had 19 points apiece for Karsiyaka in a losing effort.
|Jonas Wohlfarth-Bottermann was the key man behind Telekom Baskets' victory over EWE Basket|
Michael Koch's team took an early five-point lead at the first buzzer and never looked back, registering a convincing 90-57 victory to improve to 3-3 in the standings.
Big man Jonas Wohlfarth-Bottermann had 18 points on a 100 per cent shooting from the floor and also grabbed six rebounds for Bonn, while Patrick Ewing Jr. added 15 points and five boards.
Ronald Burrell and Julius Jenkins had 12 points apiece for Oldenburg, who missed the chance to go second in the standings and fell instead to three defeats in eight games.
DUNKERQUE WIN TO GO TOP IN FRANCE
Gravelines-Dunkerque defeated Le Havre 75-66 on Saturday to join Le Mans at the summit of the French Pro A.
Playmaker Dwight Buycks had 20 points for the winners while Sarra Camara was dominant in the paint with a double-double of 11 points and 15 rebounds.
Dijon returned to winning ways after three consecutive defeats with a hard-fought 69-65 road success at Limoges, thanks in great part to 17 points and eight rebounds from Andre Harris.
Despite a 26-point display by Souleyman Diabate, SLUC Nancy slumped to a fourth loss in five games, 82-78 at Nanterre, and remain bottom of the standings with a 1-4 record.
The fourth French team in the EuroChallenge, Paris-Levallois, improved to 3-2 in the domestic league standings with a 74-71 victory at Boulazac.
Antoine Diot had 20 points and Sean May 19 and nine boards for the Parisians.
EUROCHALLENGE TEAMS GO TOP
Okapi Aalstar travelled to Liege at the weekend and rode out 70-60 winners to improve to 4-1 and go top of the Belgian Ethias league table.
A trio of players combined for 55 of Aalstar's 70 points, with Jason Clark scoring 22, Derek Raivio 17 and Ryan Thompson 16.
Belfius Mons-Hainaut were impressive on both ends of the floor in a 91-63 rout of Belgacom Spirou at home on Saturday to improve to 3-2 in the standings.
Jonathan Wallace had 22 points and Ronell Taylor 21 for Mons-Hainaut.
Port of Antwerp Giants were the only EuroChallenge team to taste defeat in Belgium over the weekend, falling 74-61 at home to Telenet Oostende, and are now in sixth place with a 2-3 record.
A side that competes in the EuroChallenge is also top of the standings in Romania, after Gaz Metan Medias cruised to a sixth victory in seven games on Friday.
The league leaders were playing at home to U-Mobitelco BT and prevailed 92-80 with Montenegrin forward Ivan Ivanovic exploding for 35 points.
|Julian Vaughn has helped Keravnos establish an early lead in the Cypriot League standings|
Serbian forward Robert Sarovic led the way for the home team with 18 points in 22 minutes while Marcel Jones had 20 points and six rebounds for Pitesti.
CSU Asesoft Ploiesti fell 85-94 at home to CS Municipal Oradea and are now in ninth place with a 3-3 record.
Romania international Adrian Tudor was 5-for-9 from three-point range to finish with 19 points but it was not enough for the hosts who defended badly, committing an eye-popping 33 personal fouls.
Keravnos Strovolou meanwhile are the early solitary leaders in the Cypriot league with two wins in as many games after defeating APOEL 66-64 in an exciting game.
Center Julian Vaughn led all scorers with 17 points and small forward Antonio Crocker added 16 for the winners.
Michelin Etha registered their first victory, 80-63 over Ydra ENAD, behind 18 points from forward Akida Mc Lain.
Pizza Express Apollon slumped to a second consecutive defeat, losing 101-87 to Omonoia at home.
DEFEATS IN THE ADRIATIC LEAGUE
The Slovenians travelled to Kragujevac and fell to Radnicki, 84-71. Only three players scored in double digits for KRKA, with young Slovenia international Edo Muric finishing with 15 points while veteran Smiljan Pavic had 12 and Jaka Klobucar 11.
Things turned out even worse for the Hungarians meanwhile, who were outgunned 101-73 by Red Star in Belgrade.
Montenegro international Sead Sehovic had 15 points in a losing effort.
Szolnoki are now bottom of the table with two wins in seven games, while KRKA have a 3-4 record.