Five lenses for how sports markets actually behave.
Illustrative studies - not live odds - that show why the boring math beats the loud picks. Hover any chart to read the underlying numbers.
- Studies
- 5
- Data
- Illustrative
- Engine
- Recharts
- Updated
- 2026
Closing Line Value predicts long-term ROI
Modeled relationship between average CLV and 12-month ROI for a -110 bettor. CLV is the single best signal that your process beats the market.
Variance is the price of admission
Three simulated bankroll paths from identical +EV processes (54% at -110). Same edge, three completely different stories over 200 bets.
Market hold varies more than you think
Typical sportsbook hold by market. Long-tail markets (props, same-game parlays) carry 2–5× the vig of major-league sides.
Favorites don't 'always cover'
Historical-style cover rates for favorites at various NFL spreads, clustered tightly around 50% - exactly what an efficient market predicts.
Where the public concentrates vs where sharps actually bet
Public action concentrates on the emotionally satisfying side; sharp action distributes much closer to 50/50, often taking the unpopular position.
All datasets above are illustrative - engineered to demonstrate concepts accurately, not to represent any specific season or sportsbook. BetLets does not sell or distribute live odds.