A CLV audit by market type is the most honest accounting a sports bettor can do of their own process. Results are noisy — variance disguises edge and camouflages bad process. CLV strips out the noise and asks one question: did you consistently buy good numbers? If yes, the process is generating real edge. If no, the wins and losses are just variance with no durable foundation.
Segmenting CLV by market type
| Market type | Bets tracked | Avg CLV | Interpretation |
|---|---|---|---|
| NFL sides (ATS) | — | +1.2 pts avg | Real edge — beat close on spreads |
| NFL totals | — | -0.3 pts avg | No edge — buying stale numbers |
| Player props (receiving yards) | — | +0.4 pts avg | Slight edge — worth expanding |
| Player props (rushing yards) | — | -0.8 pts avg | Negative edge — reconsider process |
| NFL futures | — | +2.1 pts avg | Strong edge — increase exposure |
| Same-game parlays | — | -3.2 pts avg | Expected — SGP hold is high; reduce |
The table shows the common pattern: systematic positive CLV in some market types (sides, certain props) and consistent negative CLV in others (totals bought late, same-game parlays). The audit tells you where to concentrate your bets. Most bettors who run this analysis for the first time discover they have one or two genuinely sharp market types and several loss-generating habits that dilute overall results.
Minimum sample requirements by market type
CLV averages are only meaningful above a minimum sample. For NFL sides, you need 30+ bets to have statistical confidence in the average CLV. For props (which have higher variance per bet), 50+ bets per market type. Futures have the smallest sample requirement relative to variance because the price differential can be large — 5–10 futures bets with consistent positive CLV is meaningful. Do not draw conclusions from fewer than these minimums regardless of what the early numbers show.
Track CLV monthly if you bet frequently, or by season if you bet intermittently. A single month of positive CLV is not confirmation of edge; a full 17-week NFL season with consistent positive CLV across 60+ side bets is meaningful. The minimum viable tracking system: a spreadsheet with five columns (date, game, bet type, your price, closing price) and a formula to compute CLV for each bet. The automation of that formula is all you need to run the audit. See bet tracking for a complete system setup.
Acting on the CLV audit
Once the audit reveals where your edge lives, concentrate bet volume in those market types and reduce it in markets where you have neutral or negative CLV. This is counterintuitive because bettors often bet most in markets they find most exciting rather than where they have demonstrated edges. The discipline of reallocating time and bets toward your CLV-positive markets is one of the highest-ROI process changes available. Set a rule: after each full NFL season, reallocate bet volume proportionally to where CLV was most consistently positive. Markets with flat or negative CLV get reduced to monitoring-only until the next audit.
