Season-final Elo for all four rated units. These are the opponent-strength values every player performance against Purdue is judged with.
| Season | Rush Offense | Pass Offense | Rush Defense | Pass Defense |
|---|---|---|---|---|
| 2026 | 1293 | 1354 | 1315 | 1188 |
| 2025 | 1290 | 1350 | 1308 | 1200 |
| 2024 | 1280 | 1369 | 1334 | 1194 |
| 2023 | 1292 | 1402 | 1363 | 1226 |
| 2022 | 1221 | 1422 | 1354 | 1246 |
| 2021 | 1194 | 1446 | 1354 | 1246 |
| 2020 | 1226 | 1379 | 1335 | 1214 |
| 2019 | 1244 | 1365 | 1320 | 1238 |
| 2018 | 1298 | 1345 | 1335 | 1236 |
| 2017 | 1284 | 1270 | 1303 | 1259 |
| 2016 | 1223 | 1254 | 1194 | 1242 |
| 2015 | 1265 | 1200 | 1223 | 1248 |
| 2014 | 1282 | 1187 | 1238 | 1260 |
| 2013 | 1260 | 1230 | 1248 | 1248 |
| 2012 | 1349 | 1264 | 1274 | 1270 |
| 2011 | 1332 | 1254 | 1300 | 1255 |
| 2010 | 1318 | 1276 | 1295 | 1259 |
| 2009 | 1277 | 1378 | 1275 | 1272 |
| 2008 | 1279 | 1370 | 1302 | 1274 |
| 2007 | 1300 | 1409 | 1312 | 1228 |
| 2006 | 1302 | 1396 | 1316 | 1226 |
| 2005 | 1322 | 1358 | 1434 | 1236 |
| 2004 | 1254 | 1386 | 1446 | 1299 |
| 2003 | 1277 | 1342 | 1446 | 1314 |
| 2002 | 1282 | 1335 | 1389 | 1314 |
| 2001 | 1254 | 1290 | 1353 | 1314 |
| 2000 | 1306 | 1338 | 1314 | 1312 |