| Grade Improvement | Name | Club | Grade | Previous Grade |
|---|---|---|---|---|
| 277 | Tom Wilson | Wigan | 1590 | 1313 |
| 145 | Ethan Parker | Wigan | 1706 | 1561 |
| 99 | Jim Morris | Wigan | 1464 | 1365 |
| 83 | Aram Marsh | Wigan | 1578 | 1495 |
| 61 | Ondrej Chalupa | Wigan | 1846 | 1785 |
| 59 | John Shortt | Wigan | 1457 | 1398 |
| 54 | Vijay Kumar | Wigan | 1699 | 1645 |
| 27 | Andrew I Wilson | Wigan | 2045 | 2018 |
| 25 | Aidan F McGee | Wigan | 1786 | 1761 |
| -9 | Adam Scoular | Wigan | 1929 | 1938 |
| -11 | Damian M McCarthy | Wigan | 1996 | 2007 |
| -30 | John Reyes | Wigan | 1604 | 1634 |