Williams was ejected from the game late in the fourth quarter after an altercation with North Carolina linebacker Kevin Reddick. Williams appeared to be struck by a punch by Reddick to initiate the incident.
"No player can strike the other player," Rhoads stated. "That happened between No. 5 and No. 48 in the game, and if the officials determine it was flagrant they can be ejected from the game. However, there is no carry over to the next game.
"It was just determined to be or ruled a flagrant striking foul and the penalty for that is an ejection from the game."
According to Rhoads, if a fight had ensued both players could have been further penalized.
"If there is an actual fight, which is different from the striking fouls, there could be an additional penalty," he stated. "Anyone involved, a player, coach, or even a trainer, in an actual fight would have to miss the half [of the next game].
"However, in this incident the officials determined there were just striking fouls, which can be a punch, slap, or even an elbow or extended arm, and for that there is no carry over to the next game."
Rhoads confirmed that both Williams and Reddick would be available to play on Saturday. NC State faces Maryland and North Carolina will take on Duke.
"Absolutely, both players will be available," said Rhoads.
Williams has totaled 38 receptions for 558 yards and four touchdowns during his senior season.