Picking the right F1 winner isn't enough if your timing is off. Imagine a +500...

https://casinocrowd.com/whats-the-fastest-way-to-check-if-another-book-has-a-better-f1-number/

Picking the right F1 winner isn't enough if your timing is off. Imagine a +500 underdog that looks like a steal, only to see those odds drop to +190 as the market shifts. Catching that move can turn a winning pick into a losing bet