Best Odds Guaranteed is a horse racing betting promotion that urges the gamer to take an early price on a market. The logic is that the earlier you bet on the market, the higher the odds value. In most cases, it is an admission by the sports betting site which acts as odds insurance if the bet wins.
If at the time you placed your bet, the odds were higher, but after that, the odds reduced, you will be paid using the original odds, thus the name “Best odds guaranteed”. It cushions the better from the volatile of odds value.