The "N" Incident
The "N" Incident occurred on October 20th, 2020 when the Division B BEARSO Invitational scored no shows as N, rather than N+1. As such, no shows were scored as 98, rather than 99, slightly lowering all team scores.
On October 17th, 2020, the initial scoreboard was posted. After the final scoreboard was posted, the error went unnoticed until the same afternoon.