Introduction
A back-to-lay (B2L) trade means backing a horse at its Betfair starting price (BSP), then laying it in-running at a shorter price to lock in a profit whatever the result.
Hedge Potential (HP) shows the biggest profit that trade could have locked in, as a percentage of the stake. For a single run it is the profit available at the horse’s in-play low. For a horse, jockey or trainer it is the average across their runs in the period. Higher is better.
| HP | Meaning |
|---|---|
| 0 | The price never went below BSP, so no profit could be locked in. |
| 100 | The price halved: a profit equal to the stake could be locked in. |
| 400 | The price traded at a fifth of its BSP: a profit of four times the stake. |
How a back-to-lay locks in a profit
Back 1 unit at a price of B. Later, lay B / L units at a shorter price L.
- If the horse wins: the back bet wins B – 1 and the lay loses (B / L) x (L – 1). Net profit is B / L – 1.
- If the horse loses: the back bet loses 1 and the lay wins B / L. Net profit is again B / L – 1.
So the profit is the same either way, and the shorter the lay price, the bigger the profit.
| Profit locked in | The price must trade at or below | Example with BSP 6.0 |
|---|---|---|
| 50% | BSP / 1.5 | 4.0 |
| 100% | BSP / 2 (half the BSP) | 3.0 |
| 200% | BSP / 3 | 2.0 |
| 400% | BSP / 5 | 1.2 |
How it is calculated
Per run
HP uses the horse’s in-play low, the shortest price matched on Betfair during the race:
HP for a run = (BSP / in-play low – 1) x 100
| BSP | In-play low | HP |
|---|---|---|
| 6.0 | 6.0 or higher | 0 |
| 6.0 | 4.0 | 50 |
| 6.0 | 3.0 | 100 |
| 6.0 | 2.0 | 200 |
| 2.0 | 1.5 | 33 |
On race results this is shown as HP for that run.
Rolling figure
rolling HP = total HP / number of runs, kept between 0 and 400
Long-priced winners can produce very large single-run figures: a 20.0 winner that trades at 1.01 scores nearly 1,900. Keeping the rolling figure within 0-400 stops one run like that from dominating.
Best, worst, trend, normalised scores and race rankings work as described in the statistics overview.
Reading it
- HP measures the opportunity: the best profit a back-to-lay trader could have locked in at the in-play low.
- A rolling HP of 100 means that, on average, a back at BSP could have been turned into a locked-in profit equal to the stake.
- Winners usually trade at or near 1.01, so they score highly. A high HP reflects both winning often and strong in-play support.
- To see how HP compares with PD, BR and Impact Value, see In-play price moves.