Dudley received the larger of the two fines. He'll pay $25,000 for "escalating an on-court incident which spilled into the spectators stands by shoving Philadelphia's Joel Embiid," according to an email from the league.
Butler received a $15,000 fine for shoving Dudley back in response. Neither player was suspended for the altercation.
Both players were ejected from the game for their role in the fracas.
Despite losing Butler, a four-time All-Star, for the remainder of the game, the 76ers still emerged victorious, 112-108. Philadelphia now has an opportunity to close out the first-round series at home Tuesday, April 23.