Division I College Wrestling RPI & ISR Ratings

Submitted by Britt Malinsky
January 15, 2008

Note: The first is the RPI, with its 25-50-25 base formula, and no adjustments have been made. The second is the ISR, which is described by its creator, Boyd Nation, like this:

RPI: 25% winning percentage, 50% opponents' winning percentage, 25% opponents' opponents' winning percentage. It's the same formula the NCAA created for men's basketball, among other sports, as a guide for who to select and how to seed teams for the NCAA Tournament

ISR: "The basic idea is an iterative one. Begin with all teams set to an even rating -- 100 in this case. Then, for each game played, give each team the value of their opponent's rating plus or minus a factor for winning or losing the game -- 25 in this case. Total all of a team's results, divide by the number of games played, and that's the end of a cycle. Then use those numbers as the start of the next cycle until you get the same results for each team for two consecutive cycles."

NOTE: This is just for DUAL MEETS, not Tournaments

RPI				ISR
1	Iowa	0.68358311		1	Iowa	135.737909
2	Illinois	0.66841500		2	Penn State	130.002038
3	Oklahoma State	0.64212359		3	Oklahoma State	128.944722
4	Oklahoma	0.63081664		4	Illinois	128.084276
5	Minnesota	0.62951795		5	Iowa State	126.840847
6	Central Michigan	0.62504028		6	Central Michigan	126.413216
7	Penn State	0.62477041		7	Michigan	125.078603
8	Old Dominion	0.61850669		8	Minnesota	124.322514
9	Michigan	0.60934587		9	Oklahoma	124.061102
10	Ohio State	0.60541760		10	Ohio State	123.739978
11	Iowa State	0.60528287		11	Nebraska	121.459074
12	Edinboro	0.58765917		12	Old Dominion	120.517222
13	Maryland	0.58712711		13	Missouri	119.184854
14	Nebraska	0.58153497		14	Maryland	118.932798
15	Penn	0.58113206		15	Wisconsin	117.096871
16	Missouri	0.57323700		16	Edinboro	116.101490
17	Virginia	0.57134949		17	Northwestern	113.151764
18	Cornell	0.57077767		18	Kent State	112.339909
19	Kent State	0.56645613		19	Penn	112.142328
20	Hofstra	0.56065700		20	Virginia	111.709489
21	CS-Bakersfield	0.56063988		21	Boise State	111.466647
22	Northern Iowa	0.55958459		22	Hofstra	111.006207
23	Northwestern	0.55896258		23	Pittsburgh	110.752650
24	Virginia Tech	0.55580496		24	Northern Iowa	110.139794
25	Pittsburgh	0.54923528		25	Virginia Tech	109.509911

26	Wisconsin	0.54848527		26	Northern Illinois	108.428096
27	Michigan State	0.54808426		27	West Virginia	107.612026
28	West Virginia	0.53765438		28	Cornell	107.158909
29	Appalachian State	0.53084518		29	CS-Fullerton	106.504916
30	CS-Fullerton	0.52700170		30	CS-Bakersfield	106.467994
31	Northern Illinois	0.52693750		31	Appalachian State	106.450577
32	Boise State	0.52596328		32	North Carolina	104.480891
33	Lehigh	0.52270985		33	UT-Chattanooga	104.243685
34	Navy	0.51857260		34	Purdue	102.956415
35	North Carolina	0.51033090		35	Navy	102.735841
36	Purdue	0.51017701		36	Michigan State	102.691533
37	Cal Poly	0.50983869		37	Eastern Michigan	102.224940
38	UT-Chattanooga	0.50763669		38	Arizona State	101.469342
39	Drexel	0.50640789		39	Lehigh	100.535249
40	Arizona State	0.50354105		40	Cal Poly	100.336647
41	UNC Greensboro	0.48538632		41	North Dakota State	99.092638
42	Bloomsburg	0.48270796		42	Bloomsburg	98.622101
43	Indiana	0.48112838		43	Indiana	97.955690
44	Army	0.47951694		44	Buffalo	97.939660
45	Lock Haven	0.47624413		45	Army	96.930289
46	Eastern Michigan	0.47370495		46	Drexel	96.869458
47	North Dakota State	0.47305795		47	Lock Haven	95.855049
48	Buffalo	0.47168888		48	Columbia	95.077472
49	Oregon State	0.46691381		49	Oregon State	94.157242
50	Clarion	0.46631384		50	Stanford	93.486282

51	Bucknell	0.45899920		51	Brown	93.328912
52	Rider	0.45520401		52	UNC Greensboro	92.865998
53	Binghamton	0.45096228		53	Clarion	92.739507
54	Ohio U.	0.44989178		54	Cal-Davis	91.360577
55	N.C. State	0.44847410		55	Bucknell	91.225845
56	Columbia	0.44384895		56	Binghamton	89.833071
57	Stanford	0.44238250		57	Rider	89.405077
58	George Mason	0.44141211		58	George Mason	89.393049
59	Brown	0.43211806		59	Northern Colorado	89.221155
60	Virginia Military	0.42788369		60	N.C. State	87.317161
61	Wyoming	0.42737641		61	Ohio U.	86.280533
62	Rutgers	0.42394405		62	Boston U.	85.284341
63	American	0.41855263		63	Rutgers	85.127508
64	Cal-Davis	0.41427249		64	Harvard	84.914585
65	Cleveland State	0.41386467		65	American	83.510965
66	Oregon	0.41259444		66	Wyoming	82.557033
67	Harvard	0.40645054		67	Virginia Military	82.014840
68	Northern Colorado	0.39472184		68	Oregon	81.823846
69	Air Force	0.39353017		69	Cleveland State	79.168170
70	The Citadel	0.39277071		70	F&M	78.308846
71	Boston U.	0.38539308		71	Utah Valley State	76.069745
72	Utah Valley State	0.38382151		72	Air Force	75.668143
73	East Stroudsburg	0.38319237		73	Duke	75.587690
74	Millersville	0.38206062		74	East Stroudsburg	72.134151
75	Duke	0.37434036		75	The Citadel	71.807825

76	Wagner	0.37384988		76	Portland State	71.542646
77	F&M	0.36973765		77	South Dakota St.	70.583325
78	Liberty	0.36972011		78	Duquesne	69.223629
79	Portland State	0.36775397		79	Wagner	69.167338
80	Campbell	0.35157812		80	Delaware State	68.209697
81	Delaware State	0.34831541		81	Liberty	67.698310
82	Gardner-Webb	0.34805363		82	Millersville	67.157981
83	Davidson	0.34393076		83	Davidson	65.684136
84	South Dakota St.	0.33782242		84	Sacred Heart	63.927257
85	Sacred Heart	0.33532516		85	Campbell	58.164427
86	Duquesne	0.33328391		86	Gardner-Webb	56.639897
87	Princeton	0.28987159		87	Princeton	53.725210

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