Negative odds of 800 are generally encountered when there is a huge gap in the perception of skill or superiority between two teams or competitors. This implies that the discussed outcome is generally predicted to happen, and bookmakers have assigned the odds to reflect this expectation. In this instance, because it’s a negative number, it suggests that you’d have to bet $800 to win $100.

The number 800 is the amount you’d have to wager to bet $100. To better understand the meaning of “-800” in more specific terms, let’s look at it in detail.