Season-final Elo for all four rated units. These are the opponent-strength values every player performance against Southern Ill. is judged with.
| Season | Rush Offense | Pass Offense | Rush Defense | Pass Defense |
|---|---|---|---|---|
| 2026 | 1363 | 1242 | 1223 | 1248 |
| 2025 | 1336 | 1292 | 1231 | 1217 |
| 2024 | 1216 | 1260 | 1336 | 1192 |
| 2023 | 1132 | 1317 | 1443 | 1259 |
| 2022 | 1233 | 1390 | 1291 | 1244 |
| 2021 | 1312 | 1373 | 1192 | 1258 |
| 2020 | 1382 | 1315 | 1194 | 1224 |
| 2019 | 1424 | 1248 | 1258 | 1216 |
| 2018 | 1338 | 1260 | 1182 | 1149 |
| 2017 | 1230 | 1338 | 1200 | 1145 |
| 2016 | 1163 | 1402 | 1211 | 1100 |
| 2015 | 1276 | 1306 | 1207 | 1140 |
| 2014 | 1202 | 1196 | 1324 | 1152 |
| 2013 | 1224 | 1159 | 1364 | 1130 |
| 2012 | 1268 | 1098 | 1370 | 1188 |
| 2011 | 1348 | 1153 | 1338 | 1172 |
| 2010 | 1352 | 1152 | 1289 | 1241 |
| 2009 | 1397 | 1171 | 1318 | 1234 |
| 2008 | 1376 | 1196 | 1296 | 1226 |
| 2007 | 1434 | 1274 | 1249 | 1200 |
| 2006 | 1463 | 1162 | 1267 | 1218 |
| 2005 | 1436 | 1170 | 1260 | 1228 |
| 2004 | 1442 | 1176 | 1254 | 1220 |
| 2003 | 1339 | 1094 | 1184 | 1181 |
| 2002 | 1290 | 1079 | 1111 | 1144 |
| 2001 | 1206 | 1100 | 1117 | 1176 |