Over the last few years there has been a fair amount of upsets in racing, most happen near the finish line where people are going for broke.
Under this rule, your position going into the final corner of a track is protected. If an overtaking rider causes a crash in the final corner or straightaway and the crashed-out rider protests, IDF race officials can choose to let the leading, crashed-out rider advance to the next round.
The IDF have already used this rule to judge a few crashes. This year at Maryhill Max and Kevin had a conflict and it was resolved by the Position Protection Rule.
Max Ballesteros and Kevin Reimer were battling for third place coming into the final left. Max had about a half board-length lead on Kevin and was drafting Thiago Lessa into the corner. As Max started to lean in to the turn, Kevin put the back of his hand on Max’s hip, fully extended his arm and subtly pushed Max backward and off his line. Max slid out and crashed at the exit of the corner.
If you'd like to check out a few photos from the incident and learn a bit more about it check out Max's article.