First Blood Involvement
FB%LoLv0.1.0 · experimental · validated 2026-07-16Computed · experimental. Values are computed, but the definition or model may still change.
What it measures
Share of games where the player secured or assisted the game's first kill.
Formal definition
Games where the player scored or assisted the game's first champion kill ÷ games played.
Inputs
- champion kill events (ordered)
Exclusions
None beyond the standard confidence floor.
Sample & population
- Minimum sample
- 8 games
- Baseline population
- Players in the same role and window
- Direction
- higher better
- Unit
- %
Percentile interpretation
Early-aggression fingerprint; read with early death rate.
Confidence = source confidence × model confidence. Values from baseline models are capped at 0.7. Below-minimum samples display the value grayed out with no percentile.
Example
First-blood involvement in 5 of 12 games → 41.7%.
Known limitations
- Involvement, not credit: the killer and every listed assister count equally
- A first blood given away deliberately to set up a dive is indistinguishable from one lost
Change log
- v0.1.0 · 2026-07-16Initial baseline release