Player profile
Sam Johnstone
- Age
- 33
- Position
- Goalkeeper
- Club
- Celtic
- Nationality
- England
- Foot
- Right
- Height
- 193 cm
2026/27 at Celtic
Premiership · Goalkeeper
- Minutes
- 90
- Apps
- 1
- Starts
- 1
Scores
Measured among comparable players in Premiership, 2026/27.
54
Performance Score
How is this calculated?
- DistributionNo data
Not supplied: pass_completion_rate, passes_completed, progressive_passes
- Ball securityNo data
Not supplied: dispossessed
- Discipline54contributes 53.6
Not supplied: fouls_committed
17% of the intended inputs had data.
- Only 90 minutes played, below the 450 minute threshold for a reliable rate.
- The data source supplied 17% of the metrics this profile uses.
- Percentiles were measured against only 14 comparable players.
Scoring model 1.0.0
0
Upside signal
How is this calculated?
- Development runway0
Age 33.3 against a runway that flattens at 29.
- Output relative to age0
Performance Score 53.6 weighted by remaining runway.
- Performance trendNo data
No earlier season with a calculated score for this player.
- Playing time trajectoryNo data
No earlier season minutes on record for this player.
- Competition contextNo data
No strength rating recorded for this competition.
55% of the intended inputs had data.
- Only 90 minutes played, below the 450 minute threshold for a reliable rate.
- The data source supplied 55% of the metrics this profile uses.
- Percentiles were measured against only 14 comparable players.
Scoring model 1.0.0
51
Hidden Value signal
How is this calculated?
- Output54
Performance Score 53.6 within the position peer group.
- Market visibilityNo data
No strength rating recorded for this competition.
- Age context40
Age 33.3.
- Output against valuationNo data
No licensed market value data is configured, so valuation could not be compared.
45% of the intended inputs had data.
- Only 90 minutes played, below the 450 minute threshold for a reliable rate.
- The data source supplied 45% of the metrics this profile uses.
- Percentiles were measured against only 14 comparable players.
Scoring model 1.0.0
50
Breakout signal
How is this calculated?
- Age0
Age 33.3.
- Output accelerationNo data
No earlier season with a calculated score, so no trend could be measured.
- Minutes growthNo data
No earlier season minutes on record for this player.
- Role expansion100
Started 100% of the appearances made.
36% of the intended inputs had data.
- Only 90 minutes played, below the 450 minute threshold for a reliable rate.
- The data source supplied 36% of the metrics this profile uses.
- Percentiles were measured against only 14 comparable players.
Scoring model 1.0.0
Role profiles
This player did not meet the minimum minutes for any role profile in this season.
Performance profile
Per 90 minutes, with the percentile among comparable players.
Attacking
50th percentile among 14 comparable players
46th percentile among 14 comparable players
Discipline
54th percentile among 14 comparable players (lower is better)
Season history
- 54
2026/27
Celtic · 90 mins
Data source
- Source
- Sportmonks Football API
- Licence
- TRIAL
- Season
- 2026/27
- Competition
- Premiership
- Last updated
- 2026-10-07