| Season | League | Apps | Min | Goals | Assists | G+A / 90 | Rating |
|---|---|---|---|---|---|---|---|
| 2019/2020 | Premier League | 14 | 1205 | 0 | 0 | 0 | — |
| 2020/2021 | Premier League | 16 | 1297 | 0 | 0 | 0 | — |
| 2021/2022 | Premier League | 29 | 2566 | 1 | 0 | 0.04 | — |
| 2022/2023 | Premier League | 25 | 2163 | 1 | 0 | 0.04 | — |
| 2023/2024 | Premier League | 15 | 1107 | 0 | 0 | 0 | 7 |
| 2024/2025 | Premier League | 15 | 509 | 0 | 0 | 0 | — |
Domestic league competitions only; G+A/90 computed from minutes actually played.
Cohort: 40 Premier League defenders, 2024/2025, min. 450 minutes. Computed by ranking the full league corpus, not taken from any feed.
Figures computed from the GioScore season-stats database · as of 2026-07-06
Player stats against each opponent club
| Team | MP | W | D | L | G | A | ||
|---|---|---|---|---|---|---|---|---|
 Cardiff MU | 6 | 4 | 1 | 1 | 0 | 0 | 0 | 0 |
 Newtown AFC | 4 | 2 | 0 | 2 | 0 | 0 | 1 | 0 |
 The New Saints | 3 | 1 | 0 | 2 | 0 | 0 | 0 | 0 |
 Aberystwyth Town | 3 | 2 | 0 | 1 | 0 | 0 | 0 | 0 |
 Bala Town | 3 | 0 | 3 | 0 | 0 | 0 | 1 | 0 |
 Penybont | 3 | 1 | 0 | 2 | 0 | 0 | 1 | 0 |
 Haverfordwest County | 3 | 0 | 1 | 2 | 0 | 0 | 1 | 0 |
 Connah's Quay | 2 | 2 | 0 | 0 | 0 | 0 | 0 | 0 |
 Pontypridd Town AFC | 2 | 1 | 0 | 1 | 0 | 0 | 0 | 0 |
 Clyde | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
 Airbus UK | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
 Colwyn Bay | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
 Carmarthen Town | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
 Flint Town United | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
 Briton Ferry | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
 Ammanford | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
2024/2025 brought Gruff John Williams 15 appearances in the Premier League (509 minutes), with no direct goal involvement recorded. Ranked across the 40 Premier League defenders who played 450+ minutes in 2024/2025, he comes out in the 88th percentile by goal involvements per 90; on goals he ranks 5th of 40.
| Club | Period | Apps | Goals | Assists | Minutes | YC | RC | Rating |
|---|---|---|---|---|---|---|---|---|
| Caernarfon Town | 2019/2020 - 2024/2025 | 120 | 5 | 1 | 9328 | — | — | 7.00 |
| Porthmadog | 2023/2024 | 0 | 0 | 0 | 0 | — | — | — |
| Total | 120 | 5 | 1 | 9328 |
| Season | Club | Apps | Goals | Assists | Minutes | YC | RC | Rating |
|---|---|---|---|---|---|---|---|---|
| 24/25 | Caernarfon Town | 17 | 1 | — | 720 | 1 | 0 | — |
| 23/24 | Caernarfon Town | 15 | 0 | — | 1107 | 1 | 0 | 7.00 |
| 22/23 | Caernarfon Town | 26 | 1 | — | 2253 | 2 | 0 | — |
| 21/22 | Caernarfon Town | 30 | 2 | — | 2656 | 3 | 0 | — |
| 20/21 | Caernarfon Town | 16 | 0 | — | 1297 | 1 | 0 | — |
| 19/20 | Caernarfon Town | 16 | 1 | — | 1295 | 0 | 0 | — |
