The Cavaliers were thrashed 124-95, leaving the team third in the Central Division.
The head coach told reporters: "They beat us in transition, they beat us in the half court. They cut harder, they played harder, they were more physical. Give them credit for winning the game.
"After a performance like that you are concerned. It was a good team, on their floor, you get concerned about a performance like that.
"We are nine games in and keep on going forward and we're going to keep playing D, we're going to keep moving the ball until we figure this thing out."
The Cavaliers host the Charlotte Bobcats tomorrow.