(01-11-2013 11:43 PM)NigelTufnel Wrote: I really don't get the RPI.
RPI is only good at the end of the season. Although it sometimes starts settling in about mid-season, that's not always the case.
A big part of the RPI right now is the teams own win-loss record. Any team at this point that has a home loss is at a disadvantage. Any team that does not have an away win is at a disadvantage.
So let's take Memphis. Up until a week ago, Memphis had a home loss. It doesnt matter it was to a top 5 team. It was a home loss, and as far as the RPI is concerned that was morbidly bad.
Memphis also did not have any away wins, because they had yet to play an away game.
Therefore, a few weeks ago, Memphis' RPI was between 150-200.
The reason it takes an entire season to truly work out the RPI is because not every team plays an equal number of away games early, or quality opponents early. Memphis schedule's tougher games than many mid-major teams in the OOC. Over the past few years, we have also scheduled very few away games until conference play. (Part of this was how our OOC home-away schedules were synced up so that they were either all away or all home.)
So, in a year like this one, where Memphis hasnt played but one true away game, and has a home loss, our RPI is going to take a hit until:
A) Other teams play tougher opponents at home in their schedule and lose
B) Memphis gets into their away schedule.
Take a look at the movement of our RPI by simply beating UTK. That was an away win.
Anyway, this is why the RPI is never correct until you are deep enough into the season that most teams have had the same ratio of home and away games played. Until then, the away game players have the RPI advantage.