Kim Hellberg — GafferLens Lab
Kim Hellberg
Middlesbrough· EFL Championship · 
Sweden
0/ 100
Below current top-level standard
3rd percentile of covered managers
Career snapshot
Age
Not publicly disclosed
Appointed
24 NOV 2025
Tenure
10M
10 months
Contractⓘ
Expiry not publicly disclosed
Senior managerial experienceⓘ
10 months
Since 2025
In coaching
10 months
Includes academy & assistant roles
Season: 2026/27Competition: EFL ChampionshipUpdated: Updated this weekSource: GafferLens editorial review
GafferLens Lab
Advanced manager intelligence
GafferLens publishes a metric only when it holds the inputs for it. Where a metric is defined but empty, the definition and methodology are shown so the roadmap is transparent — no estimated xG, PPDA, field tilt or development scores are ever generated.
- Points per gameData not currently available
League points won divided by matches managed in the current spell.
- Win rateData not currently available
Share of matches won in the current spell, all competitions in the held record.
- Performance relative to resourcesGafferLens metricData not currently available
Actual league position measured against the position GafferLens editorial expected from the squad's resources.
- Tactical Flexibility IndexGafferLens metricData not currently available
How much a manager's team actually changes behaviour — not how many formations they name.
- Before / under manager comparisonGafferLens metricData not currently available
Team performance in the period before the appointment compared with performance since, adjusted for sample size.
- In-game managementData not currently available
Points gained from losing positions, points lost from winning positions, and results after tactical substitutions.
- Player development outputData not currently available
Minutes given to under-21 players, senior debuts awarded, and measurable improvement in individual output.
- Style versus resultsData not currently available
Whether the tactical approach actually produces outcomes — for example press intensity against high regains, or field tilt against xG.
- Adaptability by opponent styleGafferLens metricData not currently available
Results and performance against high presses, low blocks, back threes and possession-dominant opponents.
Methodology & data freshness
GafferScore 0.4 (provisional editorial) · tactical model 0.3 (prototype model) · rankings updated 2026-08-17. Form window: Last 10 competitive matches, recency weighted.
Updated this week · Confidence MEDIUM · Source: GafferLens editorial review
Image credits
Visual: GafferLens generic Middlesbrough shirt — an original unbranded illustration using traditional club colours. No licensed photograph verified for Kim Hellberg (status: PLACEHOLDER).