What Is SP in Horse Racing Betting?

SP stands for Starting Price.

It is the official price of a horse at the moment the race starts. If you place a bet at SP, you are accepting whatever the final starting price turns out to be rather than taking an earlier fixed price.

For example, if you back a horse at SP and it goes off at 4/1, your bet is settled at 4/1.

SP is useful for punters who do not want to take an early price, or who place bets very close to the off. It is also an important reference point when talking about whether a horse has shortened or drifted in the market.

• You do not lock in a price early
• Your bet is settled at the starting price
• Simple and straightforward
• Common for casual punters

• You take a fixed price when betting
• You keep that price if it shortens
• You miss out if SP gets bigger unless BOG applies
• Usually better for value-focused punters

• Shows where the market finished
• Useful for measuring price movements
• Important for BOG comparisons
• Helps you understand whether you beat the market

If you back a horse early at 6/1 and it starts at 4/1 SP, taking the early price was the better move.

If you back a horse early at 6/1 and it starts at 8/1 SP, then taking SP would have been better, unless your bookmaker offered Best Odds Guaranteed.

That is why serious punters pay close attention to price movement. Over time, consistently beating SP is a strong sign that you are finding value.

SP is not always the best option, but it is a useful benchmark and an important part of understanding betting markets.