| Season | League | Apps | Min | Goals | Assists | G+A / 90 | Rating |
|---|---|---|---|---|---|---|---|
| 2019/2020 | Premier League U18 | 8 | 720 | 0 | 1 | 0.13 | — |
| 2020/2021 | Premier League U18 | 8 | 603 | 1 | 0 | 0.15 | — |
| 2020/2021 | Premier League 2 Division One | 8 | 703 | 0 | 0 | 0 | — |
| 2021/2022 | Premier League 2 Division One | 24 | 2009 | 2 | 1 | 0.13 | — |
| 2022/2023 | Admiral Bundesliga | 5 | 325 | 0 | 0 | 0 | 6.69 |
| 2022/2023 | 2. Liga | 4 | 360 | 0 | 0 | 0 | — |
| 2022/2023 | Premier League 2 Division One | 13 | 1170 | 1 | 0 | 0.08 | — |
| 2023/2024 | Ligue 2 | 8 | 649 | 0 | 0 | 0 | 6.68 |
| 2023/2024 | Premier League 2 Division One | 1 | 90 | 0 | 0 | 0 | — |
| 2024/2025 | Premiership | 19 | 1219 | 0 | 0 | 0 | 6.92 |
| 2025/2026 | Premiership | 21 | 1263 | 0 | 0 | 0 | 6.82 |
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 2026-07-30
Player stats against each opponent club
| Team | MP | W | D | L | G | A | ||
|---|---|---|---|---|---|---|---|---|
 Kilmarnock | 7 | 3 | 3 | 1 | 0 | 0 | 1 | 0 |
 Hibernian | 6 | 1 | 1 | 4 | 0 | 0 | 1 | 0 |
 Hearts | 6 | 2 | 0 | 4 | 0 | 0 | 0 | 0 |
 Rangers | 5 | 0 | 1 | 4 | 0 | 0 | 0 | 0 |
 Motherwell | 5 | 2 | 1 | 2 | 0 | 0 | 1 | 0 |
 St. Mirren | 5 | 3 | 1 | 1 | 0 | 0 | 0 | 0 |
 Celtic | 3 | 0 | 0 | 3 | 0 | 0 | 0 | 0 |
 Ross County | 3 | 0 | 1 | 2 | 0 | 0 | 0 | 0 |
 Aberdeen | 3 | 0 | 0 | 3 | 0 | 0 | 0 | 0 |
 Dundee United | 3 | 1 | 1 | 1 | 0 | 0 | 0 | 0 |
 Leicester City | 2 | 2 | 0 | 0 | 0 | 0 | 0 | 0 |
 Fenerbahçe | 2 | 0 | 0 | 2 | 0 | 0 | 0 | 0 |
 Livingston | 2 | 1 | 1 | 0 | 0 | 0 | 0 | 0 |
 West Ham United U23 | 2 | 1 | 0 | 1 | 0 | 0 | 0 | 0 |
 Manchester United U23 | 2 | 1 | 0 | 1 | 0 | 0 | 0 | 0 |
 St. Johnstone | 2 | 1 | 0 | 1 | 0 | 0 | 0 | 0 |
 Everton U23 | 2 | 1 | 1 | 0 | 0 | 0 | 0 | 0 |
 Brighton U23 | 2 | 0 | 1 | 1 | 0 | 0 | 0 | 0 |
 Milan U19 | 2 | 1 | 1 | 0 | 0 | 0 | 0 | 0 |
 Genk U19 | 2 | 1 | 1 | 0 | 0 | 0 | 0 | 0 |
Billy Koumetio went through 21 Premiership appearances in 2025/2026 (1,263 minutes) without a goal or an assist. Per-match rating over the season: 6.82.
No season rated higher than 2024/2025 (6.92, Premiership); none lower than 2023/2024 (6.68). The trend line rises: his two most recent rated seasons sit 0.18 above his prior career average.
