| Date | This Team | Opponent | Expected vs. Actual | Change | New Rating | |
|---|---|---|---|---|---|---|
| 09/23/23 | Mississippi Valley (86) | vs Chippewa Valley (178) | +15.5 | 422.8 |  Stats | |
| 06/17/23 | Mississippi Valley (58) | vs Rockford (281) | -14.9 | 407.3 | Stats | |
| 06/03/23 | Mississippi Valley (118) | vs Med City (119) | +38.5 | 422.2 | Stats | |
| 07/14/19 | Mississippi Valley (20) | vs Bombshellz (381) | -21.8 | 383.7 | Stats | |
| 07/13/19 | Mississippi Valley (69) | vs Med City (269) | -20.3 | 405.5 | Stats | |
| 06/08/19 | Mississippi Valley (40) | vs Quad City Rollers (356) | -45.5 | 425.9 | Stats | |
| 04/27/19 | Mississippi Valley (115) | vs Aurora 88s (211) | -41.8 | 471.3 | Stats | |
| 06/09/18 | Mississippi Valley (192) | vs Harbor City (188) | -9.0 | 513.2 | Stats | |
| 05/26/18 | Mississippi Valley (192) | vs Quad City Rollers (151) | -17.7 | 522.2 | Stats | |
| 04/28/18 | Mississippi Valley (180) | vs Barbed Wire Betties (112) | -22.8 | 539.9 | Stats | |
| 04/21/18 | Mississippi Valley (227) | vs Dames of Anarchy (131) | -19.7 | 562.7 | Stats | |
| 03/24/18 | Mississippi Valley (301) | vs Quad City Rollers (93) | +13.3 | 582.4 | Stats | |
| 07/23/17 | Mississippi Valley (125) | vs Fox Cities (147) | +22.7 | 569.1 | Stats | |
| 07/22/17 | Mississippi Valley (286) | vs Fargo Moorhead (116) | +10.2 | 546.4 | Stats | |
| 05/20/17 | Mississippi Valley (348) | vs Dubuque (65) | +19.6 | 536.2 | Stats | |
| 04/15/17 | Mississippi Valley (200) | vs Thunder Bay (116) | +1.8 | 516.6 | Stats | |
| 03/04/17 | Mississippi Valley (244) | vs SCAR Dolls (88) | +15.5 | 514.8 | Stats | |
| 07/30/16 | Mississippi Valley (201) | vs Mid-State (150) | +13.3 | 499.4 | Stats | |
| 07/09/16 | Mississippi Valley (142) | vs Confluence (103) | +1.0 | 486.1 | Stats | |
| 06/11/16 | Mississippi Valley (140) | vs Med City (142) | -5.2 | 485.1 | Stats | |
| 05/28/16 | Mississippi Valley (109) | vs Dakota City (158) | +0.9 | 490.3 | Stats | |
| 05/07/16 | Mississippi Valley (167) | vs Cedar Rapids Rollergirls (115) | +13.6 | 489.3 |  Stats | |
| 04/16/16 | Mississippi Valley (190) | vs Rockford (164) | +3.1 | 475.8 | Stats | |
| 10/24/15 | Mississippi Valley (123) | vs Chippewa Valley (155) | +10.7 | 472.7 | Stats | |
| 10/10/15 | Mississippi Valley (97) | vs Harbor City (260) | -12.9 | 462.0 | Stats | |
| 08/29/15 | Mississippi Valley (211) | vs Confluence (121) | +5.2 | 474.8 | Stats | |
| 05/09/15 | Mississippi Valley (249) | vs Beloit Bombshells (151) | +14.7 | 469.6 | Stats | |
| 04/18/15 | Mississippi Valley (157) | vs Chippewa Valley (208) | +11.8 | 455.0 | Stats | |
| 10/11/14 | Mississippi Valley (33) | vs Sioux City (413) | -6.6 | 443.2 | Stats | |
| 08/10/14 | Mississippi Valley (121) | vs Mid-State (331) | -18.5 | 449.8 | Stats | |
| 08/09/14 | Mississippi Valley (74) | vs Fox Cities (339) | -14.9 | 468.3 | Stats | |
| 05/31/14 | Mississippi Valley (245) | vs Wisconsin River Valley (205) | +0.6 | 483.1 | Stats | |
| 07/13/13 | Mississippi Valley (98) | vs Iron Range (179) | -4.3 | 482.6 | Stats | |
| 06/29/13 | Mississippi Valley (130) | vs Cedar Valley (103) | +10.7 | 486.8 | Stats | |
| 06/22/13 | Mississippi Valley (68) | vs Paper Valley (298) | -4.1 | 476.2 | Stats | |
| 06/08/13 | Mississippi Valley (64) | vs Quad City Rollers (186) | -12.3 | 480.3 | Stats | |
| 05/04/13 | Mississippi Valley (154) | vs Rockford (127) | +12.7 | 492.5 | Stats | |
| 04/20/13 | Mississippi Valley (50) | vs North Star (375) | -17.6 | 479.9 | Stats | |
| 02/16/13 | Mississippi Valley (201) | vs Med City (94) | +5.7 | 497.4 | Stats | |
| 06/16/12 | Mississippi Valley (184) | vs Fox Cities (81) | +14.7 | 491.8 | Stats | |
| 05/12/12 | Mississippi Valley (42) | vs Des Moines (205) | -10.0 | 477.1 | Stats | |
| 05/05/12 | Mississippi Valley (97) | vs Harbor City (198) | -10.2 | 487.1 | Stats | |
| 04/14/12 | Mississippi Valley (138) | vs Chippewa Valley (68) | +2.6 | 497.2 | Stats | |
| 03/31/12 | Mississippi Valley (125) | vs Thunder Bay (114) | -0.7 | 494.6 | Stats | |
| 03/24/12 | Mississippi Valley (72) | vs Des Moines (205) | +1.3 | 495.3 | Stats | |
| 06/18/11 | Mississippi Valley (91) | vs NSRD: Northern Lights (82) | +13.9 | 494.0 | Stats | |
| 05/22/11 | Mississippi Valley (80) | vs BCB: Battlestars (160) | +1.4 | 480.1 | Stats | |
| 05/21/11 | Mississippi Valley (91) | vs Paper Valley (120) | +25.9 | 478.7 | Stats | |
| 04/02/11 | Mississippi Valley (150) | vs Harbor City (204) | +0.4 | 452.8 | Stats | |
| 01/23/11 | Mississippi Valley (75) | vs MRD: Quad Squad (246) | +2.4 | 452.5 | Stats | |
| 11/13/10 | Mississippi Valley (80) | vs Chippewa Valley (156) | -42.3 | 450.0 | Stats | |
| 10/23/10 | Mississippi Valley (48) | vs Sioux City (118) | -6.6 | 492.3 | Stats | |
| 07/24/10 | Mississippi Valley (68) | vs MRD: Team Unicorn (193) | +0.9 | 498.9 | Stats | |
| 06/12/10 | Mississippi Valley (163) | vs Harbor City (88) | +4.0 | 498.0 | Stats | |
| 05/23/10 | Mississippi Valley (55) | vs CoMo (254) | -9.1 | 494.0 | Stats | |
| 05/22/10 | Mississippi Valley (213) | vs Chippewa Valley (46) | -1.9 | 503.1 | Stats | |
| 05/22/10 | Mississippi Valley (89) | vs Rockford (115) | +13.3 | 505.0 | Stats | |
| 05/15/10 | Mississippi Valley (315) | vs Chippewa Valley (3) | 491.7 | Stats | ||
| 03/27/10 | Mississippi Valley (80) | vs NCRD: Road Warriors (62) | +29.8 | 491.7 | Stats | |
| 01/30/10 | Mississippi Valley (206) | vs Stateline Roller Derby (72) | +25.6 | 461.9 | Stats | |
| 01/10/10 | Mississippi Valley (20) | vs NSRD: Violent Femmes (199) | -10.1 | 436.3 | Stats | |
| 10/10/09 | Mississippi Valley (14) | vs Sioux City (156) | -34.5 | 446.4 | Stats | |
| 10/10/09 | Mississippi Valley (4) | vs North Star (315) | -9.1 | 480.9 | Stats | |
| 10/10/09 | Mississippi Valley (95) | vs Rushmore (85) | +29.8 | 490.0 | Stats | |
| 05/09/09 | Mississippi Valley (53) | vs PVRG: Flying Squirrels (261) | 460.2 | Stats |
| Date | Teams | Score | Incoming Ratings | Expected | Actual | Expected vs. Actual | Change | New Ratings | |
|---|---|---|---|---|---|---|---|---|---|
| 09/23/23 | Mississippi Valley Chippewa Valley | 86 178 | 407.3 557.6 | -0.61 | -0.35 | +15.5 -15.5 | 422.8 542.1 | Stats | |
| 06/17/23 | Mississippi Valley Rockford | 58 281 | 422.2 517.8 | -0.41 | -0.66 | -14.9 +14.9 | 407.3 532.7 | Stats | |
| 06/03/23 | Mississippi Valley Med City | 118 119 | 383.7 529.9 | -0.65 | -0.00 | +38.5 -38.5 | 422.2 491.4 | Stats | |
| 07/14/19 | Mississippi Valley Bombshellz | 20 381 | 405.5 533.7 | -0.53 | -0.90 | -21.8 +21.8 | 383.7 555.6 | Stats | |
| 07/13/19 | Mississippi Valley Med City | 69 269 | 425.9 486.1 | -0.25 | -0.59 | -20.3 +20.3 | 405.5 506.4 | Stats | |
| 06/08/19 | Mississippi Valley Quad City Rollers | 40 356 | 471.3 487.4 | -0.04 | -0.80 | -45.5 +45.5 | 425.9 532.9 | Stats | |
| 04/27/19 | Mississippi Valley Aurora 88s | 115 211 | 513.2 417.7 | 0.41 | -0.29 | -41.8 +41.8 | 471.3 459.5 | Stats | |
| 06/09/18 | Mississippi Valley Harbor City | 192 188 | 522.2 498.5 | 0.16 | 0.01 | -9.0 +9.0 | 513.2 507.5 | Stats | |
| 05/26/18 | Mississippi Valley Quad City Rollers | 192 151 | 539.9 460.3 | 0.42 | 0.12 | -17.7 +17.7 | 522.2 478.0 | Stats | |
| 04/28/18 | Mississippi Valley Barbed Wire Betties | 180 112 | 562.7 428.0 | 0.62 | 0.23 | -22.8 +22.8 | 539.9 450.9 | Stats | |
| 04/21/18 | Mississippi Valley Dames of Anarchy | 227 131 | 582.4 453.4 | 0.60 | 0.27 | -19.7 +19.7 | 562.7 473.0 | Stats | |
| 03/24/18 | Mississippi Valley Quad City Rollers | 301 93 | 569.1 497.0 | 0.31 | 0.53 | +13.3 -13.3 | 582.4 483.7 | Stats | |
| 07/23/17 | Mississippi Valley Fox Cities | 125 147 | 546.4 637.2 | -0.46 | -0.08 | +22.7 -22.7 | 569.1 614.6 | Stats | |
| 07/22/17 | Mississippi Valley Fargo Moorhead | 286 116 | 536.2 493.7 | 0.25 | 0.42 | +10.2 -10.2 | 546.4 483.5 | Stats | |
| 05/20/17 | Mississippi Valley Dubuque | 348 65 | 516.6 451.1 | 0.36 | 0.69 | +19.6 -19.6 | 536.2 431.5 | Stats | |
| 04/15/17 | Mississippi Valley Thunder Bay | 200 116 | 514.8 475.9 | 0.24 | 0.27 | +1.8 -1.8 | 516.6 474.0 | Stats | |
| 03/04/17 | Mississippi Valley SCAR Dolls | 244 88 | 499.4 447.6 | 0.21 | 0.47 | +15.5 -15.5 | 514.8 432.2 | Stats | |
| 07/30/16 | Mississippi Valley Mid-State | 201 150 | 486.1 492.7 | -0.08 | 0.15 | +13.3 -13.3 | 499.4 479.4 | Stats | |
| 07/09/16 | Mississippi Valley Confluence | 142 103 | 485.1 465.3 | 0.14 | 0.16 | +1.0 -1.0 | 486.1 464.4 | Stats | |
| 06/11/16 | Mississippi Valley Med City | 140 142 | 490.3 465.2 | 0.08 | -0.01 | -5.2 +5.2 | 485.1 470.4 | Stats | |
| 05/28/16 | Mississippi Valley Dakota City | 109 158 | 489.3 538.7 | -0.20 | -0.18 | +0.9 -0.9 | 490.3 537.8 | Stats | |
| 05/07/16 | Mississippi Valley Cedar Rapids Rollergirls | 167 115 | 475.8 493.5 | -0.04 | 0.18 | +13.6 -13.6 | 489.3 479.9 | Stats | |
| 04/16/16 | Mississippi Valley Rockford | 190 164 | 472.7 459.3 | 0.02 | 0.07 | +3.1 -3.1 | 475.8 456.2 | Stats | |
| 10/24/15 | Mississippi Valley Chippewa Valley | 123 155 | 462.0 519.4 | -0.32 | -0.12 | +10.7 -10.7 | 472.7 508.6 | Stats | |
| 10/10/15 | Mississippi Valley Harbor City | 97 260 | 474.8 508.6 | -0.21 | -0.46 | -12.9 +12.9 | 462.0 521.5 | Stats | |
| 08/29/15 | Mississippi Valley Confluence | 211 121 | 469.6 425.9 | 0.17 | 0.27 | +5.2 -5.2 | 474.8 420.7 | Stats | |
| 05/09/15 | Mississippi Valley Beloit Bombshells | 249 151 | 455.0 471.0 | -0.04 | 0.25 | +14.7 -14.7 | 469.6 456.4 | Stats | |
| 04/18/15 | Mississippi Valley Chippewa Valley | 157 208 | 443.2 510.7 | -0.36 | -0.14 | +11.8 -11.8 | 455.0 498.9 | Stats | |
| 10/11/14 | Mississippi Valley Sioux City | 33 413 | 449.8 625.1 | -0.73 | -0.85 | -6.6 +6.5 | 443.2 631.7 | Stats | |
| 08/10/14 | Mississippi Valley Mid-State | 121 331 | 468.3 481.6 | -0.11 | -0.46 | -18.5 +18.5 | 449.8 500.0 | Stats | |
| 08/09/14 | Mississippi Valley Fox Cities | 74 339 | 483.1 548.9 | -0.36 | -0.64 | -14.9 +14.9 | 468.3 563.8 | Stats | |
| 05/31/14 | Mississippi Valley Wisconsin River Valley | 245 205 | 482.6 475.9 | 0.08 | 0.09 | +0.6 -0.6 | 483.1 475.3 | Stats | |
| 07/13/13 | Mississippi Valley Iron Range | 98 179 | 486.8 538.6 | -0.21 | -0.29 | -4.3 +4.3 | 482.6 542.9 | Stats | |
| 06/29/13 | Mississippi Valley Cedar Valley | 130 103 | 476.2 502.9 | -0.09 | 0.12 | +10.7 -10.7 | 486.8 492.2 | Stats | |
| 06/22/13 | Mississippi Valley Paper Valley | 68 298 | 480.3 595.1 | -0.55 | -0.63 | -4.1 +4.1 | 476.2 599.1 | Stats | |
| 06/08/13 | Mississippi Valley Quad City Rollers | 64 186 | 492.5 553.3 | -0.25 | -0.49 | -12.3 +12.3 | 480.3 565.6 | Stats | |
| 05/04/13 | Mississippi Valley Rockford | 154 127 | 479.9 518.4 | -0.15 | 0.10 | +12.7 -12.7 | 492.5 505.7 | Stats | |
| 04/20/13 | Mississippi Valley North Star | 50 375 | 497.4 598.1 | -0.43 | -0.76 | -17.6 +17.6 | 479.9 615.7 | Stats | |
| 02/16/13 | Mississippi Valley Med City | 201 94 | 491.8 430.8 | 0.25 | 0.36 | +5.7 -5.7 | 497.4 425.1 | Stats | |
| 06/16/12 | Mississippi Valley Fox Cities | 184 81 | 477.1 479.6 | 0.06 | 0.39 | +14.7 -14.7 | 491.8 464.9 | Stats | |
| 05/12/12 | Mississippi Valley Des Moines | 42 205 | 487.1 566.2 | -0.43 | -0.66 | -10.0 +10.0 | 477.1 576.2 | Stats | |
| 05/05/12 | Mississippi Valley Harbor City | 97 198 | 497.2 533.8 | -0.11 | -0.34 | -10.2 +10.2 | 487.1 544.0 | Stats | |
| 04/14/12 | Mississippi Valley Chippewa Valley | 138 68 | 494.6 450.9 | 0.28 | 0.34 | +2.6 -2.6 | 497.2 448.3 | Stats | |
| 03/31/12 | Mississippi Valley Thunder Bay | 125 114 | 495.3 497.1 | 0.06 | 0.05 | -0.7 +0.7 | 494.6 497.7 | Stats | |
| 03/24/12 | Mississippi Valley Des Moines | 72 205 | 494.0 592.3 | -0.51 | -0.48 | +1.3 -1.3 | 495.3 591.0 | Stats | |
| 06/18/11 | Mississippi Valley NSRD: Northern Lights | 91 82 | 480.1 547.8 | -0.26 | 0.05 | +13.9 -13.9 | 494.0 533.9 | Stats | |
| 05/22/11 | Mississippi Valley BCB: Battlestars | 80 160 | 478.7 539.7 | -0.36 | -0.33 | +1.4 -1.4 | 480.1 538.3 | Stats | |
| 05/21/11 | Mississippi Valley Paper Valley | 91 120 | 452.8 619.5 | -0.72 | -0.14 | +25.9 -25.9 | 478.7 593.6 | Stats | |
| 04/02/11 | Mississippi Valley Harbor City | 150 204 | 452.5 471.0 | -0.16 | -0.15 | +0.4 -0.4 | 452.8 470.6 | Stats | |
| 01/23/11 | Mississippi Valley MRD: Quad Squad | 75 246 | 450.0 598.8 | -0.59 | -0.53 | +2.4 -2.4 | 452.5 596.4 | Stats | |
| 11/13/10 | Mississippi Valley Chippewa Valley | 80 156 | 492.3 353.7 | 0.55 | -0.32 | -42.3 +42.3 | 450.0 396.0 | Stats | |
| 10/23/10 | Mississippi Valley Sioux City | 48 118 | 498.9 542.2 | -0.29 | -0.42 | -6.6 +6.6 | 492.3 548.8 | Stats | |
| 07/24/10 | Mississippi Valley MRD: Team Unicorn | 68 193 | 498.0 593.2 | -0.50 | -0.48 | +0.9 -0.9 | 498.9 592.3 | Stats | |
| 06/12/10 | Mississippi Valley Harbor City | 163 88 | 494.0 463.9 | 0.22 | 0.30 | +4.0 -4.0 | 498.0 459.9 | Stats | |
| 05/23/10 | Mississippi Valley CoMo | 55 254 | 503.1 585.9 | -0.46 | -0.64 | -9.1 +9.1 | 494.0 595.0 | Stats | |
| 05/22/10 | Mississippi Valley Chippewa Valley | 213 46 | 505.0 351.8 | 0.68 | 0.64 | -1.9 +1.9 | 503.1 353.7 | Stats | |
| 05/22/10 | Mississippi Valley Rockford | 89 115 | 491.7 561.6 | -0.40 | -0.13 | +13.3 -13.3 | 505.0 548.3 | Stats | |
| 05/15/10 | Mississippi Valley Chippewa Valley | 315 3 | 491.7 [unranked] | 0.98 | | 491.7 351.8 | Stats | ||
| 03/27/10 | Mississippi Valley NCRD: Road Warriors | 80 62 | 461.9 555.4 | -0.49 | 0.13 | +29.8 -29.8 | 491.7 525.5 | Stats | |
| 01/30/10 | Mississippi Valley Stateline Roller Derby | 206 72 | 436.3 459.9 | -0.05 | 0.48 | +25.6 -25.6 | 461.9 434.3 | Stats | |
| 01/10/10 | Mississippi Valley NSRD: Violent Femmes | 20 199 | 446.4 601.4 | -0.61 | -0.82 | -10.1 +10.1 | 436.3 611.6 | Stats | |
| 10/10/09 | Mississippi Valley Sioux City | 14 156 | 480.9 499.2 | -0.12 | -0.84 | -34.5 +34.5 | 446.4 533.7 | Stats | |
| 10/10/09 | Mississippi Valley North Star | 4 315 | 490.0 696.5 | -0.79 | -0.97 | -9.1 +9.1 | 480.9 705.6 | Stats | |
| 10/10/09 | Mississippi Valley Rushmore | 95 85 | 460.2 593.3 | -0.56 | 0.06 | +29.8 -29.8 | 490.0 563.5 | Stats | |
| 05/09/09 | Mississippi Valley PVRG: Flying Squirrels | 53 261 | [unranked] 505.3 | -0.66 | | 460.2 505.3 | Stats |
