| Date | This Team | Opponent | Expected vs. Actual | Change | New Rating | |
|---|---|---|---|---|---|---|
| 09/23/23 | Mississippi Valley (86) | vs Chippewa Valley (178) | +14.7 | 302.9 |  Stats | |
| 06/17/23 | Mississippi Valley (58) | vs Rockford (281) | -13.3 | 288.3 | Stats | |
| 06/03/23 | Mississippi Valley (118) | vs Med City (119) | +39.0 | 301.6 | Stats | |
| 07/14/19 | Mississippi Valley (20) | vs Bombshellz (381) | -22.1 | 262.6 | Stats | |
| 07/13/19 | Mississippi Valley (69) | vs Med City (269) | -20.9 | 284.7 | Stats | |
| 06/08/19 | Mississippi Valley (40) | vs Quad City Rollers (356) | -45.3 | 305.6 | Stats | |
| 04/27/19 | Mississippi Valley (115) | vs Aurora 88s (211) | -40.7 | 351.0 | Stats | |
| 06/09/18 | Mississippi Valley (192) | vs Harbor City (188) | -9.4 | 391.7 | Stats | |
| 05/26/18 | Mississippi Valley (192) | vs Quad City Rollers (151) | -17.9 | 401.0 | Stats | |
| 04/28/18 | Mississippi Valley (180) | vs Barbed Wire Betties (112) | -22.3 | 419.0 | Stats | |
| 04/21/18 | Mississippi Valley (227) | vs Dames of Anarchy (131) | -19.2 | 441.3 | Stats | |
| 03/24/18 | Mississippi Valley (301) | vs Quad City Rollers (93) | +13.0 | 460.5 | Stats | |
| 07/23/17 | Mississippi Valley (125) | vs Fox Cities (147) | +22.5 | 447.6 | Stats | |
| 07/22/17 | Mississippi Valley (286) | vs Fargo Moorhead (116) | +9.8 | 425.0 | Stats | |
| 05/20/17 | Mississippi Valley (348) | vs Dubuque (65) | +20.6 | 415.2 | Stats | |
| 04/15/17 | Mississippi Valley (200) | vs Thunder Bay (116) | +0.7 | 394.6 | Stats | |
| 03/04/17 | Mississippi Valley (244) | vs SCAR Dolls (88) | +16.1 | 393.9 | Stats | |
| 07/30/16 | Mississippi Valley (201) | vs Mid-State (150) | +12.8 | 377.8 | Stats | |
| 07/09/16 | Mississippi Valley (142) | vs Confluence (103) | +0.9 | 365.0 | Stats | |
| 06/11/16 | Mississippi Valley (140) | vs Med City (142) | -4.8 | 364.1 | Stats | |
| 05/28/16 | Mississippi Valley (109) | vs Dakota City (158) | +1.1 | 369.0 | Stats | |
| 05/07/16 | Mississippi Valley (167) | vs Cedar Rapids Rollergirls (115) | +13.3 | 367.9 |  Stats | |
| 04/16/16 | Mississippi Valley (190) | vs Rockford (164) | +4.4 | 354.6 | Stats | |
| 10/24/15 | Mississippi Valley (123) | vs Chippewa Valley (155) | +9.9 | 350.2 | Stats | |
| 10/10/15 | Mississippi Valley (97) | vs Harbor City (260) | -13.2 | 340.3 | Stats | |
| 08/29/15 | Mississippi Valley (211) | vs Confluence (121) | +5.3 | 353.6 | Stats | |
| 05/09/15 | Mississippi Valley (249) | vs Beloit Bombshells (151) | +16.5 | 348.2 | Stats | |
| 04/18/15 | Mississippi Valley (157) | vs Chippewa Valley (208) | +11.1 | 331.7 | Stats | |
| 10/11/14 | Mississippi Valley (33) | vs Sioux City (413) | -7.1 | 320.7 | Stats | |
| 08/10/14 | Mississippi Valley (121) | vs Mid-State (331) | -19.3 | 327.8 | Stats | |
| 08/09/14 | Mississippi Valley (74) | vs Fox Cities (339) | -15.5 | 347.1 | Stats | |
| 05/31/14 | Mississippi Valley (245) | vs Wisconsin River Valley (205) | +1.9 | 362.6 | Stats | |
| 07/13/13 | Mississippi Valley (98) | vs Iron Range (179) | -4.1 | 360.7 | Stats | |
| 06/29/13 | Mississippi Valley (130) | vs Cedar Valley (103) | +12.0 | 364.8 | Stats | |
| 06/22/13 | Mississippi Valley (68) | vs Paper Valley (298) | -5.6 | 352.8 | Stats | |
| 06/08/13 | Mississippi Valley (64) | vs Quad City Rollers (186) | -10.4 | 358.4 | Stats | |
| 05/04/13 | Mississippi Valley (154) | vs Rockford (127) | +14.1 | 368.8 | Stats | |
| 04/20/13 | Mississippi Valley (50) | vs North Star (375) | -19.2 | 354.7 | Stats | |
| 02/16/13 | Mississippi Valley (201) | vs Med City (94) | +10.1 | 374.0 | Stats | |
| 06/16/12 | Mississippi Valley (184) | vs Fox Cities (81) | +14.2 | 363.9 | Stats | |
| 05/12/12 | Mississippi Valley (42) | vs Des Moines (205) | -9.9 | 349.6 | Stats | |
| 05/05/12 | Mississippi Valley (97) | vs Harbor City (198) | -10.2 | 359.5 | Stats | |
| 04/14/12 | Mississippi Valley (138) | vs Chippewa Valley (68) | +2.5 | 369.7 | Stats | |
| 03/31/12 | Mississippi Valley (125) | vs Thunder Bay (114) | +0.5 | 367.3 | Stats | |
| 03/24/12 | Mississippi Valley (72) | vs Des Moines (205) | +1.5 | 366.8 | Stats | |
| 06/18/11 | Mississippi Valley (91) | vs NSRD: Northern Lights (82) | +14.0 | 365.3 | Stats | |
| 05/22/11 | Mississippi Valley (80) | vs BCB: Battlestars (160) | +1.6 | 351.3 | Stats | |
| 05/21/11 | Mississippi Valley (91) | vs Paper Valley (120) | +25.6 | 349.7 | Stats | |
| 04/02/11 | Mississippi Valley (150) | vs Harbor City (204) | +0.9 | 324.1 | Stats | |
| 01/23/11 | Mississippi Valley (75) | vs MRD: Quad Squad (246) | +1.9 | 323.3 | Stats | |
| 11/13/10 | Mississippi Valley (80) | vs Chippewa Valley (156) | -42.5 | 321.3 | Stats | |
| 10/23/10 | Mississippi Valley (48) | vs Sioux City (118) | -7.0 | 363.9 | Stats | |
| 07/24/10 | Mississippi Valley (68) | vs MRD: Team Unicorn (193) | +1.0 | 370.8 | Stats | |
| 06/12/10 | Mississippi Valley (163) | vs Harbor City (88) | +5.2 | 369.9 | Stats | |
| 05/23/10 | Mississippi Valley (55) | vs CoMo (254) | -8.9 | 364.7 | Stats | |
| 05/22/10 | Mississippi Valley (213) | vs Chippewa Valley (46) | -1.9 | 373.5 | Stats | |
| 05/22/10 | Mississippi Valley (89) | vs Rockford (115) | +13.5 | 375.4 | Stats | |
| 05/15/10 | Mississippi Valley (315) | vs Chippewa Valley (3) | 361.9 | Stats | ||
| 03/27/10 | Mississippi Valley (80) | vs NCRD: Road Warriors (62) | +30.3 | 361.9 | Stats | |
| 01/30/10 | Mississippi Valley (206) | vs Stateline Roller Derby (72) | +27.1 | 331.6 | Stats | |
| 01/10/10 | Mississippi Valley (20) | vs NSRD: Violent Femmes (199) | -9.6 | 304.5 | Stats | |
| 10/10/09 | Mississippi Valley (14) | vs Sioux City (156) | -36.2 | 314.1 | Stats | |
| 10/10/09 | Mississippi Valley (4) | vs North Star (315) | -10.7 | 350.3 | Stats | |
| 10/10/09 | Mississippi Valley (95) | vs Rushmore (85) | +25.1 | 361.0 | Stats | |
| 05/09/09 | Mississippi Valley (53) | vs PVRG: Flying Squirrels (261) | 335.9 | Stats |
| Date | Teams | Score | Incoming Ratings | Expected | Actual | Expected vs. Actual | Change | New Ratings | |
|---|---|---|---|---|---|---|---|---|---|
| 09/23/23 | Mississippi Valley Chippewa Valley | 86 178 | 288.3 434.2 | -0.59 | -0.35 | +14.7 -14.7 | 302.9 419.5 | Stats | |
| 06/17/23 | Mississippi Valley Rockford | 58 281 | 301.6 403.6 | -0.43 | -0.66 | -13.3 +13.3 | 288.3 416.9 | Stats | |
| 06/03/23 | Mississippi Valley Med City | 118 119 | 262.6 411.8 | -0.66 | -0.00 | +39.0 -39.0 | 301.6 372.8 | Stats | |
| 07/14/19 | Mississippi Valley Bombshellz | 20 381 | 284.7 411.4 | -0.53 | -0.90 | -22.1 +22.1 | 262.6 433.6 | Stats | |
| 07/13/19 | Mississippi Valley Med City | 69 269 | 305.6 363.7 | -0.24 | -0.59 | -20.9 +20.9 | 284.7 384.6 | Stats | |
| 06/08/19 | Mississippi Valley Quad City Rollers | 40 356 | 351.0 367.4 | -0.04 | -0.80 | -45.3 +45.3 | 305.6 412.7 | Stats | |
| 04/27/19 | Mississippi Valley Aurora 88s | 115 211 | 391.7 300.6 | 0.39 | -0.29 | -40.7 +40.7 | 351.0 341.3 | Stats | |
| 06/09/18 | Mississippi Valley Harbor City | 192 188 | 401.0 376.2 | 0.17 | 0.01 | -9.4 +9.4 | 391.7 385.6 | Stats | |
| 05/26/18 | Mississippi Valley Quad City Rollers | 192 151 | 419.0 338.4 | 0.42 | 0.12 | -17.9 +17.9 | 401.0 356.3 | Stats | |
| 04/28/18 | Mississippi Valley Barbed Wire Betties | 180 112 | 441.3 309.3 | 0.61 | 0.23 | -22.3 +22.3 | 419.0 331.6 | Stats | |
| 04/21/18 | Mississippi Valley Dames of Anarchy | 227 131 | 460.5 333.7 | 0.59 | 0.27 | -19.2 +19.2 | 441.3 352.9 | Stats | |
| 03/24/18 | Mississippi Valley Quad City Rollers | 301 93 | 447.6 374.4 | 0.31 | 0.53 | +13.0 -13.0 | 460.5 361.4 | Stats | |
| 07/23/17 | Mississippi Valley Fox Cities | 125 147 | 425.0 515.3 | -0.46 | -0.08 | +22.5 -22.5 | 447.6 492.7 | Stats | |
| 07/22/17 | Mississippi Valley Fargo Moorhead | 286 116 | 415.2 371.3 | 0.26 | 0.42 | +9.8 -9.8 | 425.0 361.5 | Stats | |
| 05/20/17 | Mississippi Valley Dubuque | 348 65 | 394.6 333.1 | 0.34 | 0.69 | +20.6 -20.6 | 415.2 312.4 | Stats | |
| 04/15/17 | Mississippi Valley Thunder Bay | 200 116 | 393.9 350.9 | 0.25 | 0.27 | +0.7 -0.7 | 394.6 350.2 | Stats | |
| 03/04/17 | Mississippi Valley SCAR Dolls | 244 88 | 377.8 328.2 | 0.20 | 0.47 | +16.1 -16.1 | 393.9 312.2 | Stats | |
| 07/30/16 | Mississippi Valley Mid-State | 201 150 | 365.0 369.9 | -0.07 | 0.15 | +12.8 -12.8 | 377.8 357.1 | Stats | |
| 07/09/16 | Mississippi Valley Confluence | 142 103 | 364.1 344.1 | 0.14 | 0.16 | +0.9 -0.9 | 365.0 343.2 | Stats | |
| 06/11/16 | Mississippi Valley Med City | 140 142 | 369.0 345.1 | 0.07 | -0.01 | -4.8 +4.8 | 364.1 350.0 | Stats | |
| 05/28/16 | Mississippi Valley Dakota City | 109 158 | 367.9 417.9 | -0.20 | -0.18 | +1.1 -1.1 | 369.0 416.8 | Stats | |
| 05/07/16 | Mississippi Valley Cedar Rapids Rollergirls | 167 115 | 354.6 371.2 | -0.04 | 0.18 | +13.3 -13.3 | 367.9 358.0 | Stats | |
| 04/16/16 | Mississippi Valley Rockford | 190 164 | 350.2 341.2 | 0.00 | 0.07 | +4.4 -4.4 | 354.6 336.8 | Stats | |
| 10/24/15 | Mississippi Valley Chippewa Valley | 123 155 | 340.3 394.2 | -0.30 | -0.12 | +9.9 -9.9 | 350.2 384.3 | Stats | |
| 10/10/15 | Mississippi Valley Harbor City | 97 260 | 353.6 385.9 | -0.20 | -0.46 | -13.2 +13.2 | 340.3 399.1 | Stats | |
| 08/29/15 | Mississippi Valley Confluence | 211 121 | 348.2 305.1 | 0.17 | 0.27 | +5.3 -5.3 | 353.6 299.8 | Stats | |
| 05/09/15 | Mississippi Valley Beloit Bombshells | 249 151 | 331.7 354.8 | -0.07 | 0.25 | +16.5 -16.5 | 348.2 338.3 | Stats | |
| 04/18/15 | Mississippi Valley Chippewa Valley | 157 208 | 320.7 385.1 | -0.35 | -0.14 | +11.1 -11.1 | 331.7 374.0 | Stats | |
| 10/11/14 | Mississippi Valley Sioux City | 33 413 | 327.8 498.4 | -0.72 | -0.85 | -7.1 +7.1 | 320.7 505.6 | Stats | |
| 08/10/14 | Mississippi Valley Mid-State | 121 331 | 347.1 357.4 | -0.10 | -0.46 | -19.3 +19.3 | 327.8 376.6 | Stats | |
| 08/09/14 | Mississippi Valley Fox Cities | 74 339 | 362.6 425.5 | -0.34 | -0.64 | -15.5 +15.5 | 347.1 441.0 | Stats | |
| 05/31/14 | Mississippi Valley Wisconsin River Valley | 245 205 | 360.7 359.2 | 0.05 | 0.09 | +1.9 -1.9 | 362.6 357.3 | Stats | |
| 07/13/13 | Mississippi Valley Iron Range | 98 179 | 364.8 417.4 | -0.21 | -0.29 | -4.1 +4.1 | 360.7 421.4 | Stats | |
| 06/29/13 | Mississippi Valley Cedar Valley | 130 103 | 352.8 384.5 | -0.11 | 0.12 | +12.0 -12.0 | 364.8 372.5 | Stats | |
| 06/22/13 | Mississippi Valley Paper Valley | 68 298 | 358.4 465.0 | -0.52 | -0.63 | -5.6 +5.6 | 352.8 470.6 | Stats | |
| 06/08/13 | Mississippi Valley Quad City Rollers | 64 186 | 368.8 437.4 | -0.29 | -0.49 | -10.4 +10.4 | 358.4 447.8 | Stats | |
| 05/04/13 | Mississippi Valley Rockford | 154 127 | 354.7 398.7 | -0.17 | 0.10 | +14.1 -14.1 | 368.8 384.6 | Stats | |
| 04/20/13 | Mississippi Valley North Star | 50 375 | 374.0 467.0 | -0.40 | -0.76 | -19.2 +19.2 | 354.7 486.2 | Stats | |
| 02/16/13 | Mississippi Valley Med City | 201 94 | 363.9 320.7 | 0.17 | 0.36 | +10.1 -10.1 | 374.0 310.6 | Stats | |
| 06/16/12 | Mississippi Valley Fox Cities | 184 81 | 349.6 350.1 | 0.07 | 0.39 | +14.2 -14.2 | 363.9 335.9 | Stats | |
| 05/12/12 | Mississippi Valley Des Moines | 42 205 | 359.5 439.1 | -0.44 | -0.66 | -9.9 +9.9 | 349.6 449.0 | Stats | |
| 05/05/12 | Mississippi Valley Harbor City | 97 198 | 369.7 406.1 | -0.11 | -0.34 | -10.2 +10.2 | 359.5 416.3 | Stats | |
| 04/14/12 | Mississippi Valley Chippewa Valley | 138 68 | 367.3 322.9 | 0.28 | 0.34 | +2.5 -2.5 | 369.7 320.4 | Stats | |
| 03/31/12 | Mississippi Valley Thunder Bay | 125 114 | 366.8 373.6 | 0.04 | 0.05 | +0.5 -0.5 | 367.3 373.2 | Stats | |
| 03/24/12 | Mississippi Valley Des Moines | 72 205 | 365.3 465.0 | -0.51 | -0.48 | +1.5 -1.5 | 366.8 463.5 | Stats | |
| 06/18/11 | Mississippi Valley NSRD: Northern Lights | 91 82 | 351.3 419.2 | -0.26 | 0.05 | +14.0 -14.0 | 365.3 405.2 | Stats | |
| 05/22/11 | Mississippi Valley BCB: Battlestars | 80 160 | 349.7 411.8 | -0.37 | -0.33 | +1.6 -1.6 | 351.3 410.2 | Stats | |
| 05/21/11 | Mississippi Valley Paper Valley | 91 120 | 324.1 488.1 | -0.71 | -0.14 | +25.6 -25.6 | 349.7 462.5 | Stats | |
| 04/02/11 | Mississippi Valley Harbor City | 150 204 | 323.3 344.0 | -0.17 | -0.15 | +0.9 -0.9 | 324.1 343.2 | Stats | |
| 01/23/11 | Mississippi Valley MRD: Quad Squad | 75 246 | 321.3 466.7 | -0.58 | -0.53 | +1.9 -1.9 | 323.3 464.8 | Stats | |
| 11/13/10 | Mississippi Valley Chippewa Valley | 80 156 | 363.9 223.9 | 0.56 | -0.32 | -42.5 +42.5 | 321.3 266.4 | Stats | |
| 10/23/10 | Mississippi Valley Sioux City | 48 118 | 370.8 412.3 | -0.28 | -0.42 | -7.0 +7.0 | 363.9 419.3 | Stats | |
| 07/24/10 | Mississippi Valley MRD: Team Unicorn | 68 193 | 369.9 465.5 | -0.50 | -0.48 | +1.0 -1.0 | 370.8 464.5 | Stats | |
| 06/12/10 | Mississippi Valley Harbor City | 163 88 | 364.7 339.9 | 0.19 | 0.30 | +5.2 -5.2 | 369.9 334.7 | Stats | |
| 05/23/10 | Mississippi Valley CoMo | 55 254 | 373.5 457.6 | -0.46 | -0.64 | -8.9 +8.9 | 364.7 466.5 | Stats | |
| 05/22/10 | Mississippi Valley Chippewa Valley | 213 46 | 375.4 222.0 | 0.68 | 0.64 | -1.9 +1.9 | 373.5 223.9 | Stats | |
| 05/22/10 | Mississippi Valley Rockford | 89 115 | 361.9 432.9 | -0.41 | -0.13 | +13.5 -13.5 | 375.4 419.4 | Stats | |
| 05/15/10 | Mississippi Valley Chippewa Valley | 315 3 | 361.9 [unranked] | 0.98 | | 361.9 222.0 | Stats | ||
| 03/27/10 | Mississippi Valley NCRD: Road Warriors | 80 62 | 331.6 427.6 | -0.50 | 0.13 | +30.3 -30.3 | 361.9 397.3 | Stats | |
| 01/30/10 | Mississippi Valley Stateline Roller Derby | 206 72 | 304.5 334.4 | -0.08 | 0.48 | +27.1 -27.1 | 331.6 307.3 | Stats | |
| 01/10/10 | Mississippi Valley NSRD: Violent Femmes | 20 199 | 314.1 472.6 | -0.62 | -0.82 | -9.6 +9.6 | 304.5 482.2 | Stats | |
| 10/10/09 | Mississippi Valley Sioux City | 14 156 | 350.3 361.7 | -0.09 | -0.84 | -36.2 +36.2 | 314.1 397.8 | Stats | |
| 10/10/09 | Mississippi Valley North Star | 4 315 | 361.0 551.5 | -0.75 | -0.97 | -10.7 +10.7 | 350.3 562.2 | Stats | |
| 10/10/09 | Mississippi Valley Rushmore | 95 85 | 335.9 442.3 | -0.46 | 0.06 | +25.1 -25.1 | 361.0 417.2 | Stats | |
| 05/09/09 | Mississippi Valley PVRG: Flying Squirrels | 53 261 | [unranked] 381.0 | -0.66 | | 335.9 381.0 | Stats |
