Final answer:
If a substitute or replaced player influences the play in football, it is considered illegal participation. This decision is not influenced by the coach or player's choice, but rather by the rules of the game that aim to maintain fairness and integrity.
Step-by-step explanation:
If a substitute or replaced player influences the play in football, it is considered illegal participation. According to the rules, a substitute or replaced player is not allowed to enter the field of play or interfere with the game until they have been properly substituted. If they do participate without permission, it results in a penalty for the team.
For example, if a substitute player enters the field and tackles an opponent or scores a goal, it would be considered illegal participation. The referee would penalize the team for this violation.
This decision is not influenced by the coach or player's choice, but rather by the rules of the game that aim to maintain fairness and integrity.