## Why Basketball Totals Are Different
Basketball games typically produce 200–230 combined points. The total is highly predictable at the team level — pace and efficiency ratings are among the most stable metrics in team sports.
## The Key Variables
**Pace:** Possessions per 48 minutes. High-pace teams produce more scoring opportunities.
**Offensive Efficiency:** Points per 100 possessions.
**Defensive Efficiency:** Points allowed per 100 possessions.
Expected game total = (Home off eff × Away pace + Away off eff × Home pace) / 200 × 48 / 5 ... (simplified: use team-specific pace-adjusted scoring estimates)
## Simplified Approach
Home points estimate = (Home team avg points scored + Away team avg points allowed) / 2
Away points estimate = (Away team avg points scored + Home team avg points allowed) / 2
Total estimate = Home estimate + Away estimate
Compare to the bookmaker's total line. If your estimate exceeds the line by > margin threshold: Over has value. If below: Under.
## Rest and Roster Effects on Totals
- Back-to-back games reduce pace and scoring by approximately 3–5 points combined
- Star player absence reduces his team's offensive efficiency — but can increase pace (faster break opportunities)
- Foul trouble for defensive anchors increases the opposing team's efficiency
## The NBA Totals Edge
The NBA is well-modelled by sharp books and academics. Edge is most likely in:
- Non-prime-time games with lower analyst attention
- Early-season games where previous season ratings are stale
- Playoff adjustments (defensive intensity rises significantly; totals tend to go Under)
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