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 |
|---|---|---|---|---|
| 2025 | 1287 | 1348 | 1306 | 1198 |
| 2024 | 1278 | 1366 | 1331 | 1192 |
| 2023 | 1290 | 1400 | 1360 | 1222 |
| 2022 | 1219 | 1419 | 1351 | 1244 |
| 2021 | 1192 | 1444 | 1352 | 1242 |
| 2020 | 1224 | 1376 | 1332 | 1210 |
| 2019 | 1242 | 1362 | 1318 | 1236 |
| 2018 | 1296 | 1342 | 1333 | 1234 |
| 2017 | 1282 | 1268 | 1302 | 1257 |
| 2016 | 1221 | 1252 | 1192 | 1240 |
| 2015 | 1262 | 1197 | 1222 | 1246 |
| 2014 | 1279 | 1184 | 1236 | 1258 |
| 2013 | 1258 | 1228 | 1246 | 1246 |
| 2012 | 1348 | 1262 | 1272 | 1268 |
| 2011 | 1330 | 1252 | 1299 | 1253 |
| 2010 | 1316 | 1274 | 1294 | 1257 |
| 2009 | 1276 | 1376 | 1274 | 1270 |
| 2008 | 1278 | 1369 | 1300 | 1272 |
| 2007 | 1299 | 1408 | 1310 | 1226 |
| 2006 | 1300 | 1394 | 1314 | 1224 |
| 2005 | 1321 | 1356 | 1432 | 1236 |
| 2004 | 1252 | 1385 | 1444 | 1298 |
| 2003 | 1276 | 1341 | 1444 | 1314 |
| 2002 | 1282 | 1334 | 1388 | 1314 |
| 2001 | 1252 | 1288 | 1352 | 1313 |
| 2000 | 1305 | 1338 | 1314 | 1312 |