| Season | League | Apps | Min | Goals | Assists | G+A / 90 | Rating |
|---|---|---|---|---|---|---|---|
| 2013/2014 | CFA Group A | 21 | 1890 | 1 | 0 | 0.05 | — |
| 2013/2014 | CFA Group B | 6 | — | 0 | 0 | — | — |
| 2014/2015 | CFA Group A | 27 | 2357 | 0 | 0 | 0 | — |
| 2014/2015 | CFA Group B | 24 | 2160 | 0 | 0 | 0 | — |
| 2015/2016 | CFA Group A | 29 | 270 | 3 | 0 | 1 | — |
| 2016/2017 | National | 31 | 2292 | 1 | 0 | 0.04 | — |
| 2017/2018 | Ligue 2 | 25 | 2250 | 1 | 0 | 0.04 | 6.9 |
| 2017/2018 | CFA Group A | 7 | 630 | 0 | 0 | 0 | — |
| 2017/2018 | National 3: Group K | 3 | 270 | 0 | 0 | 0 | — |
| 2017/2018 | National 3: Group F | 3 | 270 | 0 | 0 | 0 | — |
| 2018/2019 | 1. Lig | 7 | 544 | 1 | 0 | 0.17 | — |
| 2018/2019 | National | 25 | 2250 | 1 | 0 | 0.04 | — |
| 2019/2020 | CFA Group B | 18 | 1600 | 1 | 0 | 0.06 | — |
| 2020/2021 | CFA Group A | 8 | 720 | 1 | 0 | 0.13 | — |
| 2021/2022 | CFA Group B | 27 | 2367 | 1 | 0 | 0.04 | — |
| 2022/2023 | CFA Group B | 27 | 2120 | 1 | 0 | 0.04 | — |
| 2023/2024 | CFA Group D | 22 | 1153 | 0 | 0 | 0 | — |
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.
Cohort: 15 CFA Group D defenders, 2023/2024, 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 2026-07-21
Player stats against each opponent club
| Team | MP | W | D | L | G | A | ||
|---|---|---|---|---|---|---|---|---|
 Belfort | 4 | 1 | 1 | 2 | 0 | 0 | 0 | 0 |
 Épinal | 3 | 2 | 0 | 1 | 0 | 0 | 0 | 0 |
 Entente SSG | 3 | 2 | 1 | 0 | 0 | 0 | 2 | 0 |
 Bobigny | 3 | 2 | 0 | 1 | 0 | 0 | 1 | 0 |
 Racing Besançon | 3 | 1 | 1 | 1 | 0 | 0 | 1 | 0 |
 Haguenau | 3 | 1 | 1 | 1 | 0 | 0 | 1 | 0 |
 Fenerbahçe | 2 | 0 | 0 | 2 | 0 | 0 | 0 | 0 |
 Brest | 2 | 0 | 0 | 2 | 0 | 0 | 0 | 0 |
 Créteil | 2 | 2 | 0 | 0 | 0 | 0 | 0 | 0 |
 Châteauroux | 2 | 0 | 0 | 2 | 0 | 0 | 0 | 0 |
 Olympique St Quentin | 2 | 2 | 0 | 0 | 0 | 0 | 0 | 0 |
 Sedan | 2 | 2 | 0 | 0 | 0 | 0 | 1 | 0 |
 Wasquehal | 2 | 1 | 0 | 1 | 1 | 0 | 0 | 0 |
 Mantes 78 | 2 | 2 | 0 | 0 | 1 | 0 | 0 | 0 |
 Raon l'Etape | 2 | 2 | 0 | 0 | 0 | 0 | 0 | 0 |
 Lorient | 2 | 1 | 1 | 0 | 0 | 0 | 1 | 0 |
 Lens II | 2 | 2 | 0 | 0 | 0 | 0 | 1 | 0 |
 Lorient II | 2 | 0 | 1 | 1 | 0 | 0 | 0 | 0 |
 Troyes II | 2 | 1 | 1 | 0 | 0 | 0 | 1 | 0 |
 Metz II | 2 | 2 | 0 | 0 | 0 | 0 | 1 | 0 |
William Séry went through 22 CFA Group D appearances in 2023/2024 (1,153 minutes) without a goal or an assist. Ranked across a cohort of 15 CFA Group D defenders with a minimum of 450 minutes in 2023/2024, he comes out in the 73rd percentile by goal involvements per 90 — goals rank: 5th of 15.
