Very few UFC analysts and fans are giving Holly Holm a chance against Ronda Rousey at UFC 193. Rousey, the fiercest female fighter in the world, has ended each of her last three fights in 34 seconds or less, and appears to be invincible. Even so, you probably shouldn’t be betting any money on Rousey, who is a massive favorite.

According to Bovada, Rousey is -2000 to win as of Saturday morning, meaning you would win a measly five dollars if you bet $100 on Rousey to win. Even if you’re 100% sure Rousey will emerge victorious, it’s barely worth putting that amount of money on the line for such a small return.

Let’s say you hoped to profit $500 by betting on Rousey. To do so, you’d have to lay down $10k, which is an enormous sum that you should probably not be gambling on UFC fights with.

In this scenario, it’s actually more worth your while to place a small bet on Holm (currently +900), as a $10 bet could make you 90 bucks.

As is the case with most Rousey fights, the prop bets are far more interesting. Bovada’s method of victory lines have a Rousey win via submission as the favorite, but a Rousey win by KO or TKO (+275) will likely be a popular betting option.