What happened: The discipline stemmed from Williams holding the ball toward a New York defender after a touchdown last week. Officials flagged the play for unsportsmanlike conduct, and Dallas missed the ensuing extra point.

Why it matters: The fine adds a league-office cost to a penalty that already hurt Dallas on the scoreboard. It also keeps attention on the same Javonte Williams who carried the load for Dallas last week as the Cowboys manage an unsettled backfield early in the season.

What to watch: Williams' role and any further discipline issues will be worth tracking in Dallas' next game. The larger question is whether the penalty stays a one-week footnote or becomes part of a broader focus on composure.