Controversy erupts in Turkish basketball finals
"What happened yesterday was sad for humanity. Our player, who faced a risk of trauma, wasn't taken to hospital by ambulance," Özsoy said.
He said the Turkish Basketball Federation launched an investigation and the injustice deflated his players but vowed Fenerbahçe will win the championship series.
Datome had to leave the court after suffering temporary memory loss during Game 5 of the series when he bumped his head on the court going after a rebound.
Medical staff checked him but ambulance staff did not take Datome to hospital because they were required to stay at the arena until the game finished.
Anadolu Efes said on its website that Fenerbahçe medical staff told medics at the Sinan Erdem Dome that nothing was urgent about Datome's condition and Fenerbahçe doctors indicated they would take him to the hospital.
Efes wished Datome a quick recovery.
The sixth game will be played Wednesday at Istanbul's Ulker Sports