ColdAnger
Walk On
- Joined
- Oct 10, 2023
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Agree that RPI is a very poor choice for men’s lacrosse. RPI breaks down in small schedules because it’s a very blunt, variance‑prone metric built on win percentages and opponent chains that simply don’t stabilize over 15-18 games, especially when conferences don’t broadly interact.
RPI is just a weighted average of three things: your winning percentage, your opponents’ winning percentage, and your opponents’ opponents’ winning percentage.
And as DomeHolmes commented, RPI ignores margin, game control, home/road, injuries, and form; a one‑goal 4OT win counts the same as a blowout, and an early‑season result counts the same as a late‑season one. In a short season that magnifies randomness already, throwing away that contextual information makes the ranking even less representative of who’s actually best.
All that said, it is what the NCAA committee uses so the schools have to play the game. It will be interesting to see how RPI differs for Cuse’s gauntlet vs Duke’s cakewalk.
RPI is just a weighted average of three things: your winning percentage, your opponents’ winning percentage, and your opponents’ opponents’ winning percentage.
And as DomeHolmes commented, RPI ignores margin, game control, home/road, injuries, and form; a one‑goal 4OT win counts the same as a blowout, and an early‑season result counts the same as a late‑season one. In a short season that magnifies randomness already, throwing away that contextual information makes the ranking even less representative of who’s actually best.
All that said, it is what the NCAA committee uses so the schools have to play the game. It will be interesting to see how RPI differs for Cuse’s gauntlet vs Duke’s cakewalk.