Serious foul play
Serious foul play is a tackle or challenge for the ball that endangers the safety of an opponent or uses excessive force or brutality; it is always a sending-off offence.
Why this wins its question: Draws the challenge-for-the-ball boundary with violent conduct explicitly, bound to the 2026/27 Law 12 and glossary wording.
Claims
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Serious foul play is a tackle or challenge that endangers the safety of an opponent or uses excessive force or brutality; it must be sanctioned with a sending-off.
Any player who lunges at an opponent in challenging for the ball from the front, the side or behind, using one or both legs, with excessive force or endangering the opponent's safety, is guilty of serious foul play.
The distinguishing element versus violent conduct is that serious foul play occurs in a challenge for the ball.