| Season | League | Apps | Min | Goals | Assists | G+A / 90 | Rating |
|---|---|---|---|---|---|---|---|
| 2010/2011 | Enterprise National League North (England) | 2 | — | 0 | 0 | — | — |
| 2011/2012 | Enterprise National League North (England) | 7 | — | 2 | 0 | — | — |
| 2012/2013 | Enterprise National League South (England) | 21 | 90 | 5 | 0 | 5 | — |
| 2013/2014 | League One (England) | 3 | 249 | 0 | 0 | 0 | — |
| 2013/2014 | Enterprise National League South (England) | 12 | — | 6 | 0 | — | — |
| 2014/2015 | League One (England) | 17 | 1057 | 5 | 1 | 0.51 | — |
| 2014/2015 | League Two (England) | 2 | — | 0 | 0 | — | — |
| 2015/2016 | League One (England) | 13 | 930 | 0 | 1 | 0.1 | — |
| 2015/2016 | League Two (England) | 6 | 316 | 0 | 0 | 0 | — |
| 2016/2017 | League Two (England) | 34 | 2173 | 11 | 5 | 0.66 | — |
| 2017/2018 | League One (England) | 29 | 2189 | 11 | 4 | 0.62 | — |
| 2018/2019 | Championship (England) | 23 | 899 | 0 | 1 | 0.1 | 6.67 |
| 2019/2020 | League One (England) | 20 | 1078 | 4 | 3 | 0.58 | 7.08 |
| 2020/2021 | League One (England) | 26 | 2042 | 4 | 2 | 0.26 | 6.87 |
| 2020/2021 | Championship (England) | 12 | 511 | 0 | 0 | 0 | 6.62 |
| 2021/2022 | League One (England) | 16 | 963 | 2 | 1 | 0.28 | 6.72 |
| 2022 | USL Championship (United States) | 30 | 1964 | 14 | 2 | 0.73 | 7.05 |
| 2022/2023 | Premiership | 14 | 1157 | 4 | 2 | 0.47 | 7.1 |
| 2023/2024 | Premiership | 35 | 2594 | 9 | 3 | 0.42 | 7.07 |
| 2024/2025 | Premiership | 23 | 1591 | 2 | 1 | 0.17 | 6.96 |
| 2025 | USL Championship (United States) | 10 | 472 | 1 | 0 | 0.19 | 6.62 |
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 2026-07-26
Player stats against each opponent club
| Team | MP | W | D | L | G | A | ||
|---|---|---|---|---|---|---|---|---|
 Gillingham | 10 | 6 | 3 | 1 | 3 | 1 | 2 | 0 |
 Doncaster Rovers | 9 | 6 | 2 | 1 | 2 | 2 | 1 | 0 |
 Celtic | 8 | 1 | 1 | 6 | 0 | 0 | 1 | 0 |
 Dundee | 8 | 2 | 5 | 1 | 0 | 1 | 1 | 0 |
 St. Johnstone | 8 | 3 | 1 | 4 | 1 | 1 | 0 | 0 |
 Portsmouth | 7 | 2 | 1 | 4 | 2 | 0 | 0 | 0 |
 Wigan Athletic | 7 | 1 | 1 | 5 | 1 | 0 | 1 | 0 |
 Rangers | 7 | 2 | 0 | 5 | 0 | 0 | 0 | 0 |
 Colchester United | 7 | 3 | 1 | 3 | 0 | 0 | 0 | 0 |
 Rochdale | 7 | 3 | 1 | 3 | 1 | 0 | 0 | 0 |
 AFC Wimbledon | 7 | 4 | 2 | 1 | 0 | 0 | 0 | 0 |
 Motherwell | 7 | 2 | 2 | 3 | 0 | 0 | 0 | 0 |
 Hearts | 7 | 2 | 3 | 2 | 1 | 1 | 1 | 0 |
 St. Mirren | 7 | 5 | 2 | 0 | 3 | 0 | 0 | 0 |
 Walsall | 6 | 0 | 4 | 2 | 0 | 0 | 0 | 0 |
 Ross County | 6 | 3 | 1 | 2 | 2 | 0 | 3 | 0 |
 Milton Keynes Dons | 6 | 2 | 3 | 1 | 2 | 0 | 1 | 0 |
 Accrington Stanley | 6 | 3 | 2 | 1 | 1 | 0 | 0 | 0 |
 Sheffield United | 5 | 1 | 1 | 3 | 0 | 0 | 1 | 0 |
 Hibernian | 5 | 0 | 3 | 2 | 1 | 0 | 1 | 1 |
K. Vassell closed the 2024/2025 Premiership campaign on 2 goals and 1 assist from 23 outings (1,591 minutes) — 0.17 goal involvements per 90. That season graded out at an average match rating of 6.96.
2022/2023 stands as his highest-rated season (7.1, Premiership), with 2020/2021 the weakest (6.62).
