> ## Documentation Index
> Fetch the complete documentation index at: https://docs.apinn.io/llms.txt
> Use this file to discover all available pages before exploring further.

# True odds (devig)

> The fair probabilities, margin removed — your reference for value and CLV.

The odds published by Pinnacle include a margin (vig/overround). The **`todds1` / `todds0` / `todds2`** fields are the **devig** odds (margin removed logarithmically) — the fair probabilities.

They are present on **every snapshot** of `/api/odds` (not only opening/closing), which lets you track how the edge evolves over time.

## Detecting value (+EV)

Compare a bookmaker's odds to the `todds`. If a book offers odds **higher** than the corresponding `todds`, it is a positive expected value opportunity.

<Info>
  Since Pinnacle is the sharpest book, its devig odds are your **OTB (Odds To Beat)** — the reference for identifying value and computing CLV.
</Info>

## Specials & outrights

`/api/specials/odds` also includes a `todds` field on each line. All contestants of a special are devig together (2-way or N-outcome market).

## CLV

Use [`/api/clv`](/en/api-reference/introduction) to compare your bet price to the closing price and get the `clv_pct`:

```bash theme={null}
curl "https://api.apinn.io/api/clv?event_id=1632370816&period=0&market=moneyline&selection=draw&bet_price=3.5" \
  -H "X-API-Key: YOUR_KEY"
# → { "closing_price": 3.11, "clv_pct": 12.54 }
```