Season-final Elo for all four rated units. These are the opponent-strength values every player performance against Williams is judged with.
| Season | Rush Offense | Pass Offense | Rush Defense | Pass Defense |
|---|---|---|---|---|
| 2025 | 1225 | 1010 | 1148 | 1032 |
| 2024 | 1211 | 992 | 1136 | 1063 |
| 2023 | 1190 | 996 | 1176 | 1062 |
| 2022 | 1184 | 1007 | 1180 | 1082 |
| 2021 | 1168 | 1033 | 1194 | 1112 |
| 2019 | 1104 | 1038 | 1172 | 1108 |
| 2018 | 999 | 1046 | 1120 | 1104 |
| 2017 | 966 | 1053 | 1107 | 1099 |
| 2016 | 933 | 1054 | 1060 | 1104 |
| 2015 | 931 | 1084 | 1080 | 1117 |
| 2014 | 953 | 1077 | 1109 | 1108 |
| 2013 | 988 | 1076 | 1122 | 1088 |
| 2012 | 1038 | 1074 | 1109 | 1072 |
| 2011 | 1055 | 1090 | 1100 | 1084 |