Re: Derby Betting Strat (824 Views)

Not exactly.

That's close in an exacta box.

Number of exacta combinations in a 10 horse field = 10 * 9 = 90. A three horse box gets you 6 or 6.667%.

In a 20 horse field there are = 20 * 19 = 380 combinations and a six horse box gets you 30 or 7.9% of the combinations. The actual answer would be a 5 over 6 play for 25 combinations or 6.6%.

In a tri the numbers move more dramatically; a 3 horse box gets you 6/720 or .83%. In a 20 horse field (20 * 19 * 18 = 6,840) you do not need a six horse box (6 * 5 * 4 = 120) but 57 combinations which is about a 4 over 4 over 7 = 60.