The first indications show waist discomfort.
Kostas Sloukas suffered an injury in the Round 21 game between Olympiacos Piraeus and Maccabi Playtika Tel Aviv at the Peace and Friendship Stadium.
A collision with Maccabi's Jarrell Martin led Sloukas to the locker room before the first half finished.
With 3:17 remaining in the second quarter, the 33-year-old Greek veteran went to his own bench and was accompanied to the locker room, along with Olympiacos' doctor, Theofanis Tsavisis, who later suggested that the player would not return to the court. Sloukas was ruled out for the rest of the game.
The first indications show waist discomfort, while the actual extent of the injury will be clarified on Saturday after the medical tests, via the club's official information.
Sloukas had 3 points, 4 rebounds, and 3 assists in 9 minutes before exiting the EuroLeague contest early.