| Season | League | Apps | Min | Goals | Assists | G+A / 90 | Rating |
|---|---|---|---|---|---|---|---|
| 2016/2017 | Enterprise National League (England) | 1 | 6 | 0 | 0 | — | — |
| 2017/2018 | Enterprise National League (England) | 10 | 663 | 0 | 0 | 0 | — |
| 2018/2019 | Enterprise National League (England) | 40 | 3527 | 1 | 0 | 0.03 | — |
| 2019/2020 | League Two (England) | 15 | 1224 | 0 | 0 | 0 | 6.78 |
| 2020/2021 | League Two (England) | 44 | 3585 | 11 | 0 | 0.28 | 6.95 |
| 2021/2022 | League Two (England) | 42 | 3602 | 3 | 1 | 0.1 | 6.77 |
| 2022/2023 | League Two (England) | 44 | 3935 | 6 | 2 | 0.18 | 6.99 |
| 2023/2024 | League One (England) | 46 | 4093 | 5 | 0 | 0.11 | 6.85 |
| 2024/2025 | League One (England) | 21 | 1411 | 1 | 0 | 0.06 | 6.86 |
| 2024/2025 | League Two (England) | 23 | 1877 | 2 | 2 | 0.19 | 6.98 |
| 2025/2026 | League One (England) | 2 | 92 | 0 | 0 | 0 | 6.41 |
| 2025/2026 | League Two (England) | 34 | 2470 | 3 | 3 | 0.22 | 6.68 |
Domestic league competitions only (SportMonks sub_type='domestic'); national-team, continental and cup competitions are excluded. Classification resolved by league id against the canonical leagues index. G+A/90 computed from minutes actually played.
Figures computed from the GioScore season-stats database · as of 2026-07-26
Player stats against each opponent club
| Team | MP | W | D | L | G | A | ||
|---|---|---|---|---|---|---|---|---|
 Leyton Orient | 13 | 2 | 3 | 8 | 1 | 0 | 2 | 0 |
 Colchester United | 11 | 4 | 4 | 3 | 2 | 0 | 5 | 0 |
 Salford City | 11 | 5 | 3 | 3 | 1 | 0 | 3 | 1 |
 Tranmere Rovers | 11 | 3 | 2 | 6 | 1 | 0 | 3 | 0 |
 Crawley Town | 10 | 5 | 4 | 1 | 2 | 1 | 0 | 0 |
 Barrow | 10 | 5 | 3 | 2 | 3 | 1 | 4 | 0 |
 Stevenage | 10 | 5 | 3 | 2 | 1 | 0 | 1 | 0 |
 Newport County | 9 | 4 | 3 | 2 | 2 | 0 | 2 | 0 |
 Walsall | 9 | 2 | 3 | 4 | 2 | 0 | 2 | 0 |
 Bradford City | 9 | 4 | 2 | 3 | 0 | 0 | 0 | 0 |
 Cambridge United | 9 | 2 | 3 | 4 | 0 | 0 | 3 | 0 |
 Swindon Town | 9 | 5 | 1 | 3 | 0 | 0 | 0 | 0 |
 Harrogate Town | 9 | 3 | 2 | 4 | 0 | 1 | 2 | 0 |
 Exeter City | 8 | 1 | 1 | 6 | 0 | 0 | 1 | 1 |
 Northampton Town | 8 | 2 | 3 | 3 | 0 | 0 | 1 | 0 |
 Mansfield Town | 8 | 2 | 3 | 3 | 0 | 0 | 2 | 0 |
 Grimsby Town | 7 | 2 | 3 | 2 | 0 | 0 | 0 | 1 |
 Oldham Athletic | 7 | 3 | 2 | 2 | 0 | 0 | 2 | 0 |
 Bristol Rovers | 7 | 4 | 0 | 3 | 0 | 0 | 1 | 0 |
 Port Vale | 7 | 2 | 3 | 2 | 2 | 0 | 3 | 0 |
Jon Mellish closed the 2025/2026 League Two (England) campaign on 3 goals and 3 assists from 34 outings (2,470 minutes) — 0.22 goal involvements per 90. His average match rating for that season computes to 6.68.
2022/2023 stands as his highest-rated season (6.99, League Two (England)), with 2025/2026 the weakest (6.68).
