Why planning bets in advance can be helpful

There are benefits to planning bets a day or two in advance.

Bob and John are betting on the same race on Saturday. Bob and his horse won the Wood Memorial (G1) in 2006. John is betting $20 on a 5-2 shot who finishes third. The weather changes and the races are cancelled. Bob's ticket for the Pick 4 costs $192. He takes in the scratches and restructures his ticket. It's raining heavily. They are playing the late afternoon stakes. There is a change in venue. All the racing is moved to the main track. This changes the prices. For John, the ticket costs him $24. His horse is scratched.