| Season | League | Apps | Min | Goals | Assists | G+A / 90 | Rating |
|---|---|---|---|---|---|---|---|
| 2014 | J2-League | 1 | 90 | 0 | 0 | 0 | — |
| 2016 | J2-League | 2 | — | 0 | 0 | — | — |
| 2020 | J2-League | 40 | 3600 | 0 | 0 | 0 | — |
| 2021 | J1 League | 14 | 1260 | 0 | 0 | 0 | 6.96 |
| 2022 | J2-League | 17 | 1392 | 0 | 0 | 0 | — |
| 2023 | J2-League | 31 | 2790 | 0 | 0 | 0 | — |
| 2024 | J1 League | 25 | 2193 | 0 | 0 | 0 | 7.15 |
| 2025 | J1 League | 7 | 630 | 0 | 0 | 0 | 6.54 |
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 2026-07-24
Player stats against each opponent club
| Team | MP | W | D | L | G | A | ||
|---|---|---|---|---|---|---|---|---|
 Consadole Sapporo | 5 | 2 | 1 | 2 | 0 | 0 | 0 | 0 |
 Kashiwa Reysol | 4 | 2 | 0 | 2 | 0 | 0 | 0 | 0 |
 Avispa Fukuoka | 4 | 0 | 1 | 3 | 0 | 0 | 0 | 0 |
 FC Tokyo | 4 | 0 | 2 | 2 | 0 | 0 | 0 | 0 |
 Kyoto Sanga | 4 | 1 | 1 | 2 | 0 | 0 | 0 | 1 |
 Vissel Kobe | 4 | 1 | 0 | 3 | 0 | 0 | 0 | 0 |
 Fagiano Okayama | 4 | 1 | 1 | 2 | 0 | 0 | 1 | 0 |
 Urawa Reds | 3 | 0 | 0 | 3 | 0 | 0 | 0 | 0 |
 Shonan Bellmare | 3 | 2 | 1 | 0 | 0 | 0 | 0 | 0 |
 Yokohama | 3 | 1 | 0 | 2 | 0 | 0 | 0 | 0 |
 Cerezo Osaka | 3 | 0 | 2 | 1 | 0 | 0 | 1 | 0 |
 Shimizu S-Pulse | 3 | 0 | 1 | 2 | 0 | 0 | 0 | 0 |
 Kashima Antlers | 3 | 1 | 1 | 1 | 0 | 0 | 0 | 0 |
 Kawasaki Frontale | 3 | 2 | 0 | 1 | 0 | 0 | 0 | 0 |
 Tokushima Vortis | 3 | 2 | 1 | 0 | 0 | 0 | 0 | 0 |
 Vegalta Sendai | 3 | 1 | 0 | 2 | 0 | 0 | 0 | 0 |
 Tochigi | 3 | 0 | 2 | 1 | 0 | 0 | 0 | 0 |
 Sagan Tosu | 2 | 0 | 1 | 1 | 0 | 0 | 0 | 0 |
 Ventforet Kofu | 2 | 0 | 1 | 1 | 0 | 0 | 0 | 0 |
 Tokyo Verdy | 2 | 0 | 0 | 2 | 0 | 0 | 0 | 0 |
William Popp featured 7 times in the 2025 J1 League (630 minutes). That season graded out at an average match rating of 6.54.
His league record spans 8 seasons (2014–2025) across 7 clubs. At his best he averaged 7.15 in 2024, J1 League; at his worst, 6.54 in 2025.
