Ratings Percentage Index for D1 College Lacrosse (2002)

Current RPI (including games of 2002 May 4)

Team Hockey RPI NCAA RPI Record Sched Strength Opp Pct Opp Opp Pct RPIStr
Rk Rating Rk Rating Rk W-L-T Pct Rk SOS Rk OPct Rk OOPct Rk Rating
Johns Hopkins 1 .7609 1 .7274 1 11-1 .9167 1 .6771 1 .7058 7 .5811 1 .8680
Syracuse 2 .7109 2 .6831 2 12-2 .8571 6 .6321 6 .6479 9 .5795 2 .8089
Virginia 4 .6898 3 .6731 7 10-3 .7692 4 .6471 5 .6607 2 .6018 5 .7442
Georgetown 3 .6903 4 .6644 3 11-2 .8462 7 .6063 9 .6119 5 .5878 3 .7921
Princeton 8 .6570 5 .6519 13 8-4 .6667 3 .6518 4 .6624 1 .6164 10 .6657
Hofstra 5 .6612 6 .6394 4 11-3 .7857 11 .5942 12 .6024 10 .5669 6 .7434
Cornell 7 .6589 7 .6380 6 10-3 .7692 10 .5995 10 .6115 14 .5598 7 .7328
UMass 6 .6610 8 .6374 5 11-3 .7857 12 .5939 11 .6073 16 .5492 4 .7445
Duke 10 .6241 9 .6299 26 7-6 .5385 2 .6702 2 .6923 3 .5965 21 .5740
Yale 9 .6347 10 .6219 11 9-4 .6923 9 .6037 7 .6155 11 .5643 8 .6746
Loyola 11 .6220 11 .6110 8 9-4 .6923 14 .5841 14 .5844 6 .5831 9 .6674
No. Carolina 13 .6094 12 .6060 18 8-5 .6154 8 .6062 8 .6139 8 .5808 14 .6150
Maryland 12 .6134 13 .6032 9 9-4 .6923 15 .5709 16 .5652 4 .5899 11 .6630
Brown 15 .5892 14 .5943 28 7-7 .5000 5 .6372 3 .6629 15 .5515 26 .5376
Pennsylvania 14 .5896 15 .5752 10 9-4 .6923 23 .5342 25 .5298 17 .5491 12 .6548
Navy 16 .5801 16 .5723 17 8-5 .6154 16 .5611 15 .5682 20 .5374 16 .6045
Penn State 17 .5664 17 .5610 19 8-5 .6154 22 .5400 23 .5334 13 .5618 17 .5965
Towson 19 .5624 18 .5603 21 7-5 .5833 18 .5512 20 .5479 12 .5620 20 .5752
Ohio State 18 .5658 19 .5518 14 9-5 .6429 25 .5243 24 .5310 28 .5022 13 .6170
Harvard 20 .5438 20 .5438 27 8-7 .5333 20 .5495 18 .5546 21 .5326 25 .5382
UMBC 23 .5280 21 .5409 36 5-7 .4167 13 .5880 13 .6007 18 .5456 33 .4591
Drexel 21 .5432 22 .5317 16 8-5 .6154 28 .5044 28 .5057 30 .4999 19 .5901
Dartmouth 25 .5203 23 .5271 31 6-7 .4615 17 .5520 17 .5589 23 .5290 29 .4840
Fairfield 22 .5303 24 .5245 20 7-5 .5833 29 .5017 31 .4944 24 .5259 22 .5628
Hobart 26 .5085 25 .5121 32 6-7 .4615 24 .5337 21 .5444 31 .4982 30 .4807
Stony Brook 24 .5261 26 .5097 15 10-6 .6250 34 .4728 34 .4765 37 .4607 18 .5907
Notre Dame 31 .4861 27 .5009 39 5-8 .3846 21 .5408 22 .5433 22 .5325 37 .4212
Army 27 .5045 28 .4982 22 8-6 .5714 36 .4685 36 .4564 26 .5088 23 .5449
Albany 28 .5041 29 .4956 23 9-7 .5625 35 .4727 35 .4711 36 .4778 24 .5414
Villanova 32 .4850 30 .4926 35 6-8 .4286 27 .5153 27 .5184 27 .5049 35 .4493
Bucknell 30 .4872 31 .4902 30 6-7 .4615 30 .5010 29 .5037 32 .4919 31 .4713
Butler 35 .4593 32 .4708 37 5-8 .3846 31 .4995 30 .4992 29 .5004 38 .4111
Sacred Heart 34 .4641 33 .4702 34 6-8 .4286 32 .4832 32 .4810 33 .4902 36 .4407
Manhattan 29 .4898 34 .4628 12 11-5 .6875 48 .3833 47 .3732 48 .4172 15 .6150
Hartford 33 .4700 35 .4585 24 9-7 .5625 40 .4202 41 .4119 41 .4476 27 .5278
Rutgers 43 .4082 36 .4480 51 2-12 .1429 19 .5511 19 .5543 19 .5404 50 .2378
Delaware 41 .4155 37 .4467 49 3-11 .2143 26 .5239 26 .5234 25 .5255 48 .2856
Quinnipiac 36 .4466 38 .4462 33 6-7 .4615 39 .4386 39 .4330 40 .4573 34 .4549
Air Force 39 .4284 39 .4430 43 4-8 .3333 33 .4796 33 .4800 35 .4785 41 .3672
Denver 40 .4280 40 .4379 38 5-8 .3846 37 .4514 37 .4417 34 .4837 39 .3978
Colgate 38 .4305 41 .4265 29 7-7 .5000 44 .3931 46 .3733 39 .4592 32 .4708
Lehigh 42 .4148 42 .4251 40 5-9 .3571 38 .4459 38 .4417 38 .4598 40 .3766
Providence 37 .4349 43 .4207 25 9-7 .5625 50 .3661 51 .3496 46 .4212 28 .5134
Mt St Mary's 44 .3885 44 .3964 42 6-11 .3529 42 .4076 42 .4005 44 .4315 42 .3639
Vermont 45 .3785 45 .3860 41 5-9 .3571 45 .3900 45 .3773 43 .4324 43 .3618
St. Joseph's 46 .3725 46 .3860 47 4-10 .2857 41 .4192 40 .4187 47 .4210 46 .3164
Lafayette 48 .3646 47 .3795 46 4-10 .2857 43 .4070 43 .3985 42 .4353 47 .3117
Canisius 47 .3673 48 .3738 44 4-8 .3333 46 .3857 44 .3820 51 .3978 44 .3446
Marist 49 .3423 49 .3505 45 4-9 .3077 51 .3610 50 .3525 53 .3892 45 .3180
VMI 50 .3214 50 .3358 48 2-6 .2500 52 .3598 52 .3496 52 .3938 49 .2730
Holy Cross 52 .2748 51 .3104 54 1-13 .0714 47 .3844 48 .3716 45 .4271 54 .1407
Binghamton 51 .2776 52 .3065 53 1-8 .1111 49 .3673 49 .3575 50 .4001 53 .1680
Boston Coll 54 .2612 53 .2894 52 1-7 .1250 53 .3346 54 .3128 49 .4070 52 .1683
Wagner 53 .2673 54 .2872 50 2-9 .1818 55 .3133 55 .2933 54 .3802 51 .2075
Siena 55 .2412 55 .2718 55 1-13 .0714 54 .3327 53 .3193 55 .3773 55 .1286

Explanation of the Table

Hockey RPI
The Ratings Percentage Index is one of the NCAA's selection criteria for college hockey. It is a sum of .35 times a team's winning percentage, .50 times their opponents' winning percentage (q.v.) and .15 times their opponents' opponents' winning percentage (q.v.). Equivalently, it can be calculated as .35 times their winning percentage plus .65 times their Strength Of Schedule (SOS; q.v.).
NCAA RPI
This is calculated using the NCAA's original formula for the ratings percentage index, which weights the three contributions 25%:50%:25%. This is presumably the rating more relevant to the actual lacrosse selections.
Record
Winning percentage (Pct) is calculated as described on the rating system comparison page.
Sched Strength
The Strength Of Schedule (SOS) as measured by the hockey RPI is given by 10/13 times a team's opponents' winning percentage (q.v.) plus 3/13 times their opponents' opponents' winning percentage (q.v.). (Note that we do not list the SOS as measured by the NCAA RPI. It would be given by 2/3 times the opponents' winning percentage and 1/3 times the opponents' opponents' winning percentage.)
Opp Pct
The Opponents' Winning Percentage (OPct) for a team is calculated by averaging the winning percentages of all their opponents in games not involving that team. The weighting factor is the number of games a team played against a particular opponent. Because games against the team in question are left out, it is not simply a weighted average of the winning percentages.
Opp Opp Pct
The Opponents' Opponents' Winning Percentage (OOPct) for a team is a weighted average of the Opponents' Winning Percentages (OPct; q.v.) of each of their opponents. Once again, the weighting factor is the number of games played against each opponent, but this time no extra games are left out, so each opponent's contribution can be read from the OPct column for that opponent.
RPIStr
The "strength" of a team (as a prospective opponent) for Hockey RPI purposes is given by 10/13 times their winning percentage plus 3/13 times their Opponents' Winning Percentage (OPct; q.v.). Since head-to-head games have to be left out of the RPI calculation, a team's strength of schedule is not exactly the weighted average of the RPIStr numbers for all its opponents, but RPIStr gives a sense of how RPI will evaluate the strength of each opponent. (Each team's name in the table above is a link to a rundown of selection criteria which includes a list of their opponents with their actual contribution to that team's strength of schedule.) Note that RPIStr is much more heavily weighted towards winning percentage than RPI itself. Note also that that the "strength" as measured by the NCAA RPI is 2/3 times a team's winning percentage plus 1/3 times their opponets' winning percentage, and is not listed in the table above.

More analysis of the Ratings Percentage Index, including the history behind the different weighting used in hockey, can be found on the RPI page of slack.net/hockey