| Season | League | Apps | Min | Goals | Assists | G+A / 90 | Rating |
|---|---|---|---|---|---|---|---|
| 2011/2012 | Championship (England) | 4 | 127 | 0 | 0 | 0 | — |
| 2011/2012 | Enterprise National League (England) | 5 | — | 5 | 0 | — | — |
| 2012/2013 | League Two (England) | 40 | 3470 | 15 | 0 | 0.39 | — |
| 2013/2014 | League One (England) | 45 | 3898 | 24 | 0 | 0.55 | — |
| 2014/2015 | Championship (England) | 8 | 1966 | 15 | 1 | 0.73 | — |
| 2015/2016 | Championship (England) | 4 | 57 | 1 | 0 | — | 6.77 |
| 2016/2017 | Championship (England) | 32 | 1818 | 14 | 1 | 0.74 | 7.01 |
| 2017/2018 | Championship (England) | 46 | 3127 | 15 | 0 | 0.43 | 6.97 |
| 2018/2019 | Championship (England) | 42 | 2682 | 14 | 0 | 0.47 | 6.86 |
| 2019/2020 | Championship (England) | 35 | 2510 | 11 | 2 | 0.47 | 6.82 |
| 2020/2021 | Championship (England) | 31 | 1722 | 5 | 0 | 0.26 | 6.64 |
| 2021/2022 | Super Lig | 37 | 1724 | 10 | 1 | 0.57 | 6.94 |
| 2022/2023 | Championship (England) | 11 | 177 | 2 | 0 | 1.02 | 6.7 |
| 2022/2023 | Super Lig | 12 | 403 | 2 | 1 | 0.67 | 6.76 |
| 2023/2024 | Super Lig | 22 | 624 | 1 | 0 | 0.14 | 6.71 |
| 2024/2025 | 1. Lig | 18 | 1378 | 3 | 1 | 0.26 | 6.89 |
| 2025/2026 | League Two (England) | 16 | 499 | 1 | 0 | 0.18 | 6.42 |
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 2026-08-12
Player stats against each opponent club
| Team | MP | W | D | L | G | A | ||
|---|---|---|---|---|---|---|---|---|
 Reading | 13 | 10 | 2 | 1 | 6 | 0 | 1 | 0 |
 Brentford | 13 | 1 | 3 | 9 | 1 | 0 | 2 | 0 |
 Queens Park Rangers | 12 | 3 | 3 | 6 | 4 | 0 | 2 | 0 |
 Blackburn Rovers | 11 | 1 | 5 | 5 | 1 | 0 | 0 | 0 |
 Birmingham City | 11 | 6 | 1 | 4 | 8 | 0 | 0 | 1 |
 Preston North End | 11 | 2 | 5 | 4 | 2 | 0 | 0 | 0 |
 Bristol City | 11 | 5 | 1 | 5 | 5 | 0 | 2 | 0 |
 Wigan Athletic | 10 | 4 | 5 | 1 | 3 | 0 | 0 | 0 |
 Derby County | 10 | 3 | 4 | 3 | 4 | 0 | 0 | 0 |
 Sheffield Wednesday | 10 | 4 | 1 | 5 | 2 | 0 | 1 | 0 |
 Cardiff City | 10 | 0 | 3 | 7 | 2 | 0 | 2 | 0 |
 Millwall | 9 | 3 | 4 | 2 | 2 | 0 | 1 | 0 |
 Rotherham United | 9 | 4 | 3 | 2 | 4 | 0 | 1 | 0 |
 Aston Villa | 8 | 2 | 2 | 4 | 1 | 1 | 0 | 0 |
 Norwich City | 8 | 1 | 1 | 6 | 1 | 1 | 0 | 0 |
 Barnsley | 8 | 3 | 1 | 4 | 1 | 0 | 0 | 0 |
 Leeds United | 8 | 1 | 3 | 4 | 1 | 0 | 1 | 0 |
 Ipswich Town | 8 | 6 | 2 | 0 | 4 | 0 | 0 | 0 |
 Huddersfield Town | 8 | 3 | 1 | 4 | 2 | 0 | 0 | 0 |
 Fulham | 7 | 2 | 2 | 3 | 3 | 0 | 0 | 0 |
All of Britt Assombalonga's 2025/2026 League Two (England) output came as goals: 1 goal in 16 games (499 minutes) — 0.18 goal involvements per 90. GioScore's computed rating for the season averages 6.42.
Season ratings peak at 7.01 in 2016/2017, Championship (England) and bottom out at 6.42 in 2025/2026. Averaged over his last two rated seasons, he sits 0.17 below his earlier career level.
