What does SP stand for? SP stands for starting price and refers to the odds of a selection when the race starts. You have the choice of taking the SP or your horse’s current odds at the time you place your bet. For more information, see our general rules here. If you need any further assistance, please see our contact details here. Related articles What is an unnamed favourite/second favourite? Contact us What's a free bet and how do I use one? Cash Out Race card jargon buster