Domestic-league season · Derby.
Missed 20 of Derby's ~46 games this season through 20 injury absences (hamstring, inactive). He still appeared 15 times — a solid return given how little of the season he was available. His rating is judged mainly on the games he was fit to play.
| Competition | Apps | G | A | Min | Match |
|---|---|---|---|---|---|
 Championship | 15 | 0 | 1 | 970 | 6.64 |
 UEFA U21 Championship - Qualificationat Scotland U21 | 6 | 0 | 0 | 490 | — |
 Bundesligaat Sturm Graz | 3 | 1 | 0 | 267 | 7.53 |
 Cupat Sturm Graz | 1 | 0 | 1 | 74 | 7.41 |
 UEFA Champions Leagueat Sturm Graz | 1 | 0 | 0 | 57 | 5.6 |
Following his move to Derby, Johnston's current-season form is up 1400% on last season (Season 1→15), while his Rating climbed 41→65. That makes this his strongest season for form to date.
| Season | Club | Apps | G | A | Match | RTG | Season |
|---|---|---|---|---|---|---|---|
| 2025/26 | Derby · 8th | 15 | 0 | 1 | 6.64 | 65 | 15 |
| 2020/21 | Motherwell · 3rd | 2 | 0 | 0 | 6.3 | 41 | 1 |
Domestic-league totals per season. RTG = Field Insider Rating (potential / ceiling); Season = age-blind form that year.
| Competition | Apps | G |
|---|---|---|
| Friendlies | 1 | 0 |
Caps & goals this season.
M. Johnston is a 22-year-old full-back at Derby, rated 64.6 overall by Field Insider's model, ranking 133rd of 493 in the Championship and 520th of 2861 U-23 players tracked. An emerging talent, he has been a rotation option this season (41.5% of available minutes). His defensive output reads 2.04 tackles, blocks and interceptions per 90. Below: strengths, watch-points, market-value outlook and the latest transfer news on Johnston.
Judged on this season alone, Johnston graded 15 — a workmanlike campaign that ranks 59th of 77 of the 77 full-backs in the Championship, on 3 clean sheets and 2.041 defensive actions per 90.
Year-on-year, that's a clear step up on last season (Season 1 → 15).
On long-term talent our Rating reads 65, top 28% of the 77 full-backs in the Championship. At 22 Johnston is still climbing toward his ceiling, and a market index of 78.6 reflects that trajectory.
Read the appearance count in context: Johnston missed 20 games through injury (hamstring, inactive) out of roughly 46 this season. The 15 he did play is a solid return on the time he was fit, and his ratings are weighted toward those games rather than the ones he sat out injured.
2.04 tackles, blocks & interceptions per 90 — moderate defensive volume, with 3 clean sheets across 15 appearances. Behind an upper-table side (8th of 24) the side controls more games, so the defensive load is lighter — the value sits as much in composure and ball progression as in raw volume. Going forward he chipped in 0 goals and 1 assist — a useful bonus from the back.
With a Rating of 64.6, Johnston carries the 21st-highest potential of the full-backs in the Championship (top 28%). Defensively he reads as moderate defensive volume (2.04 tackles, blocks & interceptions per 90). Approaching peak years; value is still building (price multiplier 1.9×) with the best seasons likely ahead. With this floor already at 22, the ceiling gets tested by a step up in level — one to track.
Generated from Field Insider's rating model · AI-written analysis to follow.
The gold line is market value — an index (not €) blending rating, age and league. It climbs through the early 20s, peaks around ages 23–27 (~83), then tapers with age. At 22, Johnston sits on 78.6, still climbing toward its peak. The blue line is Johnston's projected Rating — 64.6 today — recomputed at each age, so it follows the same rise-and-fall as a career matures and declines. Solid = up to today; dashed = projected.
No transfer news found for this player.
