The latest RPI (4/7) is one of those situations where it becomes obvious that RPI is heavily dependent on how your opponents and opponents' opponents fare. (75% of the formula)
I don't have the SEBaseball.com numbers yet this morning, but the 4/6 Adjusted RPI was .6166 (#12). Boyd's Adjusted RPI from 4/6 was .616 (#12).
This morning, Boyd's Adjusted RPI was .614 (#13). A non-trivial drop after a decent win against a Top 100 RPI club. Why? It was due to Cajun opponents, especially the higher rated ones (RPI bonuses dwindle), not performing well last night.
The following non-conference Top 75 RPI Cajun opponents lost last night ... the only non-conference Top 75 RPI opponents thus far ...
Southern Mississippi (at Central Florida)
Southeastern Louisiana (vs. McNeese State)
Texas-San Antonio (at Texas-Arlington)
Other non-conference Cajun oponents lost last night, but I focus on the above schools since they constitute RPI bonus points for the Cajuns. Both Southeastern Louisiana and Texas-San Antonio dropped a bonus level with last night's losses (from Top 50 Base RPI to Top 75 Base RPI). Southern Mississippi continues to slump and may soon find themselves outside of the Top 50 Base RPI.
Remember that opponents winning percentage constitutes 50% of the Base RPI.
For those that are interested, Arizona State (aRPI 21) did win last night over Stanford. Those that would like to see the Sun Devils play may be able to catch them on DirecTV channel 649 at 3pm today. Josh Satow threw last night for the Sun Devils and Mike Leake will probably go today. Tulane's loss to Memphis (aRPI 23) dropped them to #56 in Boyd's aRPI.
Incidentally, we are now at the point of the season where the RPI is becoming meaningful (as far as stability of the formula is concerned). We are now at the point of the season where half of the field of 293 Div. I teams are connected to a degree that make the RPI system meaningful.
Brian