| Season | League | Apps | Min | Goals | Assists | G+A / 90 | Rating |
|---|---|---|---|---|---|---|---|
| 2016/2017 | Premiership | 1 | 57 | 0 | 1 | — | — |
| 2017/2018 | Premiership | 3 | 153 | 0 | 0 | 0 | — |
| 2018/2019 | Premiership | 14 | 679 | 5 | 0 | 0.66 | — |
| 2019/2020 | Premiership | 11 | 468 | 2 | 3 | 0.96 | 7.13 |
| 2020/2021 | Premiership | 10 | 245 | 0 | 1 | 0.37 | 6.76 |
| 2021/2022 | Premiership | 12 | 442 | 0 | 0 | 0 | 6.98 |
| 2022/2023 | Liga Portugal | 25 | 1362 | 1 | 4 | 0.33 | 6.96 |
| 2023/2024 | Championship (England) | 20 | 1342 | 7 | 2 | 0.6 | 7.26 |
| 2023/2024 | Premiership | 9 | 303 | 2 | 0 | 0.59 | 7.22 |
| 2024/2025 | Championship (England) | 40 | 2072 | 3 | 5 | 0.35 | 7.02 |
| 2024/2025 | Premiership | 1 | 15 | 0 | 0 | — | 6.53 |
| 2025/2026 | Championship (England) | 34 | 2313 | 2 | 9 | 0.43 | 6.96 |
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 2026-07-27
Player stats against each opponent club
| Team | MP | W | D | L | G | A | ||
|---|---|---|---|---|---|---|---|---|
 Kilmarnock | 9 | 5 | 2 | 2 | 0 | 0 | 0 | 0 |
 St. Johnstone | 9 | 9 | 0 | 0 | 1 | 2 | 0 | 0 |
 Rangers | 8 | 3 | 1 | 4 | 0 | 0 | 0 | 0 |
 Hibernian | 8 | 5 | 2 | 1 | 0 | 0 | 0 | 0 |
 Livingston | 7 | 2 | 3 | 2 | 0 | 0 | 0 | 0 |
 Motherwell | 7 | 6 | 1 | 0 | 1 | 0 | 0 | 0 |
 Hearts | 7 | 5 | 0 | 2 | 2 | 0 | 0 | 0 |
 St. Mirren | 7 | 4 | 2 | 1 | 0 | 0 | 0 | 0 |
 Dundee | 6 | 6 | 0 | 0 | 4 | 0 | 0 | 0 |
 Norwich City | 5 | 1 | 1 | 3 | 0 | 0 | 1 | 0 |
 Coventry City | 5 | 2 | 0 | 3 | 1 | 0 | 0 | 0 |
 Ross County | 5 | 5 | 0 | 0 | 1 | 0 | 1 | 0 |
 Aberdeen | 5 | 4 | 1 | 0 | 0 | 0 | 1 | 0 |
 Hamilton Academical | 5 | 5 | 0 | 0 | 0 | 1 | 0 | 0 |
 Portsmouth | 4 | 2 | 1 | 1 | 1 | 2 | 1 | 0 |
 Middlesbrough | 4 | 0 | 0 | 4 | 0 | 1 | 0 | 0 |
 Hull City | 4 | 1 | 2 | 1 | 0 | 1 | 0 | 0 |
 Derby County | 4 | 0 | 1 | 3 | 0 | 0 | 0 | 0 |
 Watford | 4 | 1 | 1 | 2 | 1 | 0 | 0 | 0 |
 Stoke City | 4 | 1 | 3 | 0 | 1 | 1 | 0 | 0 |
Player stats against each opponent national team
| Team | MP | W | D | L | G | A | ||
|---|---|---|---|---|---|---|---|---|
 Portugal | 3 | 1 | 0 | 2 | 0 | 0 | 0 | 0 |
 Greece | 2 | 0 | 0 | 2 | 0 | 0 | 0 | 0 |
 Finland | 2 | 2 | 0 | 0 | 0 | 0 | 0 | 0 |
 Bulgaria | 2 | 2 | 0 | 0 | 0 | 0 | 2 | 0 |
 Hungary | 2 | 2 | 0 | 0 | 0 | 0 | 0 | 0 |
 Netherlands U21 | 2 | 2 | 0 | 0 | 0 | 0 | 0 | 0 |
 New Zealand | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 |
 Armenia | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
 England | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
 Netherlands | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
 Switzerland | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
 Latvia | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
 Belgium | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 |
 Gibraltar | 1 | 1 | 0 | 0 | 1 | 0 | 0 | 0 |
 Latvia U21 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
 Andorra U21 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
 France U20 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
 Turkey U20 | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
 Togo U21 | 1 | 0 | 1 | 0 | 0 | 1 | 0 | 0 |
 Korea Republic U21 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
Across 34 Championship (England) appearances in 2025/2026, Mikey Johnston contributed 2 goals plus 9 assists (2,313 minutes) — 0.43 goal involvements per 90. His average match rating for that season computes to 6.96.
At his best he averaged 7.26 in 2023/2024, Championship (England); at his worst, 6.76 in 2020/2021.
