The NBA said in a statement Friday that it decided to suspend Acy because his act initiated the confrontation. The league said it fined Wall because his actions escalated the incident.
Acy shoved Wall when the Wizards guard had the ball with 5:31 to play in Washington's 102-91 victory. Wall retaliated with a shove, and things escalated from there. It was unclear whether Acy threw a punch during the skirmish, but both players had to be separated by teammates.
Both Acy and Knicks coach Derek Fisher said Thursday that Acy did not throw a punch at Wall.
"I didn't throw a punch. I got up and reacted, then I just grabbed him," Acy said.
Acy received a flagrant foul 2 and was ejected from the game. Wall was issued a technical foul.