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Since this came up in a separate topic thought it might be fun to have a separate thread.
Here are 3 rating systems (RPI, KenPom, and Massey) for December 30th.
Note that the committee only uses RPI - which is my least favorite. They re-did the RPI about 7-8 yrs ago and imo they completely messed it up.
The basic formula for RPI is 1/4*adjusted winning percentage + 3/4*SOS.
Note that the RPI gives extra weight to road/neutral wins - and when you add that to SoS, if a lower league team can win a game or two on the road against the P5 they shoot up the ratings. Also, given how much weight is on the SoS it is imperative not to schedule the lower teams (sub 250). Just playing them will bring your RPI down about 20 spots - and that is if you win.
Anywhere. I've included the 3 ratings for all ACC schools and all schools GT has played so far.
Team RPI KenPom Massey
BC 149 129 110
Clem 144 130 108
Duke 6 3 3
FSU 162 119 100
GT 33 95 68
L'ville 30 7 7
Miami 84 68 53
UNC 22 9 13
NCST 73 77 71
ND 78 20 17
Pitt 79 55 58
Syr 80 32 44
UVA 3 2 2
VT 239 183 177
Wake 169 121 140
I'll talk about GT's RPI in a minute.
Notice though, RPI does not like ND while the other rankings do. This is a function of ND winning alot, but winning at home against a weak schedule. That pushes them down in RPI, but not the other 2.
As the season progresses you should see the RPI get closer to the other 2, but not exactly.
Here is GT's opponents rankings so far
RPI KP Massey
UGA 24 36 42
AL A&M 298 346 342
IPFW 241 246 240
Marq 111 103 78
Rider 184 178 166
RI 54 52 75
NW 96 131 109
USC Up 163 152 148
App St 215 279 260
Vandy 92 62 81
Dayton 17 58 36
Char 56 98 104
The big key for GT is only 1 really awful team on the schedule. And only 3 that are below 200. That makes a huge difference in the RPI. Northwestern's win at Rutgers last night really helped as it shot them into the RPI 100. The Upstate loss is a bad loss, but not a horrendous one.
UGA's RPI is high for a similar reason to GT. Smart scheduling. They only have one good win - Seton Hall. But most of the teams they have played are 100-200 types and their losses are all to RPI 100 teams. They are basically GT with fewer Top 100 wins, but without the Upstate loss.
Missing out on Mich ST ended up not hurting GT very much because it got an acceptable Rider team and a Rhode island team whose rankings are higher than Mich St.
Just looking at the 3 ratings, i would probably say I like Massey's the best by just a hair over KenPom. You see though that the tend to group the teams more together than the RPI does.
While i don't expect it to last, it's nice to see GT starting from a position of relative strength in the RPI (GT is actually the 5th highest rated ACC team as of today) as it starts its ACC schedule rather than way down.
Since we concentrate on our team we tend not to notice that pretty much every team in the ACC other than the top 4 have at least 1 loss that is worse than GT's worst loss at this point (which is partly why GT has the higher RPI).
Here are 3 rating systems (RPI, KenPom, and Massey) for December 30th.
Note that the committee only uses RPI - which is my least favorite. They re-did the RPI about 7-8 yrs ago and imo they completely messed it up.
The basic formula for RPI is 1/4*adjusted winning percentage + 3/4*SOS.
Note that the RPI gives extra weight to road/neutral wins - and when you add that to SoS, if a lower league team can win a game or two on the road against the P5 they shoot up the ratings. Also, given how much weight is on the SoS it is imperative not to schedule the lower teams (sub 250). Just playing them will bring your RPI down about 20 spots - and that is if you win.
Anywhere. I've included the 3 ratings for all ACC schools and all schools GT has played so far.
Team RPI KenPom Massey
BC 149 129 110
Clem 144 130 108
Duke 6 3 3
FSU 162 119 100
GT 33 95 68
L'ville 30 7 7
Miami 84 68 53
UNC 22 9 13
NCST 73 77 71
ND 78 20 17
Pitt 79 55 58
Syr 80 32 44
UVA 3 2 2
VT 239 183 177
Wake 169 121 140
I'll talk about GT's RPI in a minute.
Notice though, RPI does not like ND while the other rankings do. This is a function of ND winning alot, but winning at home against a weak schedule. That pushes them down in RPI, but not the other 2.
As the season progresses you should see the RPI get closer to the other 2, but not exactly.
Here is GT's opponents rankings so far
RPI KP Massey
UGA 24 36 42
AL A&M 298 346 342
IPFW 241 246 240
Marq 111 103 78
Rider 184 178 166
RI 54 52 75
NW 96 131 109
USC Up 163 152 148
App St 215 279 260
Vandy 92 62 81
Dayton 17 58 36
Char 56 98 104
The big key for GT is only 1 really awful team on the schedule. And only 3 that are below 200. That makes a huge difference in the RPI. Northwestern's win at Rutgers last night really helped as it shot them into the RPI 100. The Upstate loss is a bad loss, but not a horrendous one.
UGA's RPI is high for a similar reason to GT. Smart scheduling. They only have one good win - Seton Hall. But most of the teams they have played are 100-200 types and their losses are all to RPI 100 teams. They are basically GT with fewer Top 100 wins, but without the Upstate loss.
Missing out on Mich ST ended up not hurting GT very much because it got an acceptable Rider team and a Rhode island team whose rankings are higher than Mich St.
Just looking at the 3 ratings, i would probably say I like Massey's the best by just a hair over KenPom. You see though that the tend to group the teams more together than the RPI does.
While i don't expect it to last, it's nice to see GT starting from a position of relative strength in the RPI (GT is actually the 5th highest rated ACC team as of today) as it starts its ACC schedule rather than way down.
Since we concentrate on our team we tend not to notice that pretty much every team in the ACC other than the top 4 have at least 1 loss that is worse than GT's worst loss at this point (which is partly why GT has the higher RPI).
