The 99-91 loss was the Pistons' second defeat of the season, leaving them ninth in the Eastern Conference standings.
The head coach told reporters: "I wouldn't say [I'm] pleased. You're never pleased if you lose the game, number one, and number two, I thought they were aggressive. They got to the penalty.
"We didn't get to the penalty. I think those are huge differences in the game. They make shots to get to the penalty and make a few foul shots here and there. It paid dividends for them."
The Pistons face the Oklahoma City Thunder on Friday.