| Season | League | Apps | Min | Goals | Assists | G+A / 90 | Rating |
|---|---|---|---|---|---|---|---|
| 2013/2014 | Premier League | 20 | 1487 | 0 | 0 | 0 | — |
| 2014/2015 | Championship (England) | 6 | 270 | 0 | 0 | 0 | — |
| 2014/2015 | League One (England) | 1 | 752 | 0 | 0 | 0 | — |
| 2015/2016 | Championship (England) | 1 | 1 | 0 | 0 | — | — |
| 2015/2016 | League One (England) | 6 | 464 | 0 | 0 | 0 | — |
| 2016/2017 | Championship (England) | 15 | 755 | 0 | 0 | 0 | 6.61 |
| 2017/2018 | Premiership | 26 | 2284 | 3 | 3 | 0.24 | — |
| 2017/2018 | First Division | 6 | 528 | 2 | 0 | 0.34 | — |
| 2017/2018 | Super Ligue | 25 | 2194 | 3 | 0 | 0.12 | — |
| 2018/2019 | Championship (England) | 10 | 576 | 0 | 0 | 0 | 6.6 |
| 2019/2020 | Championship (England) | 1 | 18 | 0 | 0 | — | 6.73 |
| 2020/2021 | League Two (England) | 21 | 1695 | 2 | 1 | 0.16 | 6.95 |
| 2021/2022 | League One (England) | 39 | 3276 | 4 | 7 | 0.3 | 7.06 |
| 2022/2023 | League One (England) | 20 | 1294 | 1 | 2 | 0.21 | 6.87 |
| 2023/2024 | League Two (England) | 32 | 2499 | 0 | 3 | 0.11 | 6.84 |
| 2024/2025 | Premiership | 18 | 1288 | 2 | 1 | 0.21 | 6.95 |
| 2025/2026 | Premiership | 30 | 2377 | 1 | 5 | 0.23 | 6.88 |
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 2026-07-27
Player stats against each opponent club
| Team | MP | W | D | L | G | A | ||
|---|---|---|---|---|---|---|---|---|
 Celtic | 10 | 1 | 2 | 7 | 1 | 0 | 0 | 0 |
 Kilmarnock | 8 | 1 | 2 | 5 | 2 | 0 | 1 | 0 |
 Aberdeen | 8 | 7 | 0 | 1 | 0 | 0 | 0 | 0 |
 Motherwell | 8 | 2 | 3 | 3 | 0 | 1 | 0 | 0 |
 Hearts | 8 | 4 | 1 | 3 | 0 | 0 | 0 | 0 |
 Charlton Athletic | 7 | 6 | 1 | 0 | 0 | 0 | 1 | 0 |
 Derby County | 7 | 1 | 3 | 3 | 0 | 0 | 0 | 0 |
 Hibernian | 7 | 1 | 3 | 3 | 0 | 0 | 2 | 0 |
 Dundee | 7 | 2 | 1 | 4 | 0 | 0 | 0 | 0 |
 Norwich City | 6 | 0 | 0 | 6 | 0 | 0 | 0 | 0 |
 Sheffield Wednesday | 6 | 1 | 2 | 3 | 0 | 0 | 0 | 0 |
 Dundee United | 6 | 2 | 0 | 4 | 0 | 0 | 0 | 0 |
 Gillingham | 6 | 3 | 1 | 2 | 1 | 0 | 0 | 0 |
 Barnsley | 5 | 1 | 3 | 1 | 0 | 0 | 0 | 0 |
 Rangers | 5 | 2 | 2 | 1 | 0 | 0 | 0 | 0 |
 Colchester United | 5 | 1 | 2 | 2 | 0 | 0 | 0 | 0 |
 Crewe Alexandra | 5 | 5 | 0 | 0 | 0 | 0 | 1 | 0 |
 Cambridge United | 5 | 3 | 1 | 1 | 1 | 0 | 0 | 0 |
 Milton Keynes Dons | 5 | 2 | 1 | 2 | 0 | 2 | 0 | 0 |
 Accrington Stanley | 5 | 2 | 0 | 3 | 0 | 1 | 1 | 0 |
Player stats against each opponent national team
| Team | MP | W | D | L | G | A | ||
|---|---|---|---|---|---|---|---|---|
 Uruguay | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
 Mexico | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 |
 China PR | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
 Trinidad and Tobago | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
 North Macedonia | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
 Netherlands | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
 Spain | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
Declan John closed the 2025/2026 Premiership campaign on 1 goal and 5 assists from 30 outings (2,377 minutes) — 0.23 goal involvements per 90. Per-match rating over the season: 6.88.
2021/2022 stands as his highest-rated season (7.06, League One (England)), with 2018/2019 the weakest (6.6).
