Beverley accused a Mavericks season-ticket holder of cursing at him.
Beverley was given a technical foul and ejected from Sunday's game after launching a ball at a fan sitting courtside in American Airlines Arena.
Beverley accused the fan of cursing at him and said the spectator told him, "F--- your mother."
The fan was identified as Mavericks season-ticket holder Don Knobler. He said he called Beverley as a dirty player for accidentally hitting Mavericks guard Dennis Smith Jr.