Besiktas played excellent offensively and edged Anadolu Efes on the road (86-90) to hand their opponents their second loss in the league.
Jason Rich was unstoppable and led the winners in scoring, with 27 points, on 9/13 from the field. Ivan Buva and Robin Benzing added 17 points apiece.
Bryant Dunston (17 points, six rebounds), Shane Larkin (17 points, five assists) and Adrien Moerman (14 points, 12 boards) were the best players of the losing squad.
It was a close game for both teams, with the visitors being in front by four (76-80), with 35 seconds remaining.
Rich made a three-pointer and extended the lead to seven (76-83), yet Larkin reacted and cut the deficit to two (84-86), with 11 seconds to go.
The visitors stood tall, though, and scored from the free-throw line to seal the deal.
Besiktas improved to 4-4, whereas Anadolu Efes dropped to 6-2.