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 | 1217 | 1004 | 1140 | 1026 |
| 2024 | 1203 | 986 | 1128 | 1057 |
| 2023 | 1182 | 990 | 1168 | 1057 |
| 2022 | 1176 | 1002 | 1172 | 1077 |
| 2021 | 1160 | 1029 | 1186 | 1108 |
| 2019 | 1098 | 1034 | 1165 | 1104 |
| 2018 | 994 | 1042 | 1114 | 1100 |
| 2017 | 962 | 1050 | 1102 | 1096 |
| 2016 | 928 | 1052 | 1056 | 1102 |
| 2015 | 926 | 1081 | 1075 | 1114 |
| 2014 | 948 | 1074 | 1104 | 1106 |
| 2013 | 983 | 1074 | 1119 | 1087 |
| 2012 | 1034 | 1073 | 1107 | 1072 |
| 2011 | 1052 | 1088 | 1098 | 1083 |