So I am extremely new to Horse Racing and I wanted to know how OTB works. For instance, I live in Phoenix and there are quite a few OTB locations. Does this mean that I could bet on all races across the country? For instance, would I have been able to bet on the Kentucky Derby at one of these locations? If so, would the payouts be the same? The reason I ask is because I don't completely understand who makes the payouts. Some of these places don't look like they could payout $48,000 for a Derby Superfecta. Could anyone shed some light on OTB? Thanks in advance.