Player Props · DraftKings Lines & Edges
April 22, 2026 MLB Total Bases Props
Updated Jun 5, 12:45 AM ET
How we model these edges
- Model method:
- poisson_per_game
- Approximation quality:
- Approximate
- Bias direction:
- Model edges on overs are biased low — real overs are slightly better than reported.
- Edge definition:
- model_over_prob - no_vig(over_implied_prob)
- ·Poisson approximation under-estimates the tail of total bases; model edges on overs are biased low — real overs are slightly better than reported.
- ·Integer lines (e.g. line=2.0) are treated as 'over wins on ≥2', which slightly overstates over_prob vs sportsbook push rules. Half-point lines (X.5) — the near-universal case for these markets — are unaffected.
Planned improvement: Replace Poisson tail with ML simulation prop_probs (src/projections/ml/simulation.py) once the sim emits the needed thresholds (TB ≥1/≥4/≥5; full K grid) and the backtest validates calibration improvement.
Total Bases Board
No DraftKings total bases lines for this date yet — props typically post in the late morning ET.
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