Data sources and quality controls
📊 Where the data comes from
Primary data sources for fantasy ipl predictions: Cricbuzz and ESPNcricinfo for ball-by-ball and player statistics, fantasy ipl internal database covering 18,400+ player-innings since 2022 IPL, IPL official API for confirmed playing XIs and player updates, weather services for outdoor match conditions.
Internal data collection: fantasy ipl editorial team tracks every IPL match with structured data capture. Player-level data includes: position in batting order, number of balls faced, scoring zones, bowling spells (overs + runs conceded + wickets), fielding contributions, captain designation.
Cross-validation: every prediction is checked against actual match outcomes. Statistical models are re-trained weekly during IPL season with latest data. Outlier predictions are flagged for review.
⚙️ Quality control and accuracy tracking
Every prediction has a confidence interval (90% CI). When actual outcomes fall outside the interval, models are reviewed for systematic errors. Recent accuracy audits show: 65% team win predictions correct, 55-60% captain picks correct, 70% player projections within 90% CI.
The 30-45% error rate on individual predictions is intentional. Predictions are designed as data inputs, not certainties. Users who treat them as one of multiple inputs outperform users who treat them as definitive picks.
Sub-process accuracy: venue-specific predictions show higher accuracy for venues with more historical data (Mumbai, Delhi, Bengaluru have 100+ matches each). Lower-data venues (newer grounds) have higher prediction variance.
📚 How to interpret confidence intervals
A 90% confidence interval means: 90% of simulations fall within the range. 10% fall outside (5% on each side). For IPL predictions, the 10% outside often comes from unexpected match conditions (weather, individual brilliance, team collapse).
Use the upper end of confidence interval for ceiling calculations (potential upside of a player). Use the lower end for floor calculations (worst-case scenarios). The midpoint is approximate.
Practical application: if Virat Kohli is projected at 65 fantasy points with 90% CI of 40-90, treat him as a 40-90 range player. In H2H contests against weak bowling, lean toward ceiling. In contests against strong bowling, lean toward floor.
📈 Tracking accuracy over multiple seasons
fantasy ipl tracks prediction accuracy across each IPL season. Long-term averages: 60% captain pick accuracy (vs 50% baseline), 65% team winner prediction accuracy, 72% player projection within CI.
The 60% captain pick accuracy is statistically significant vs 50% baseline. This represents real edge. But individual match variance means any single match can produce a wrong pick. Over 60+ matches, the 60% rate produces meaningful bankroll difference vs 50%.
Multi-season tracking helps identify whether edge is consistent or has decayed. Edge decay is real: as more users see and apply predictions, the public market adjusts. We monitor accuracy per season to detect decay patterns.