What should be done when a player entered a wrong match result in round 1 that was only discovered in round 5, with playoffs upcoming?

Ruling: The Head Judge has final authority to decide how to resolve scorekeeping problems. In this case, when fixing the score would compromise tournament integrity too much due to the domino effect on Swiss pairings across multiple rounds, the result should not be changed.

Sequence:

• Assess whether the tournament has playoffs and whether they have started
• Evaluate how much fixing the score would compromise the tournament integrity given the domino effect on subsequent Swiss pairings
• Consider whether the player who made the mistake should face penalties (though this may be harsh for a single tracking mistake, especially in lower level events)
• Make a decision prioritizing the lesser evil that doesn't screw over other players

Nuances:

• The Swiss aspect's integrity is technically compromised either way because players may have faced stronger/weaker opponents than they should have based on incorrect standings
• In low level events without playoffs, you can simply fix the score and standings
• Prevention is key: have a scorekeeper or Head Judge enter scores rather than letting players self-report, and warn players to properly track scores