When you see 3 in betting, it usually means that the odds of winning for the favored team are 3-1. If you bet on the favored team, and they win, you'll get three times your original bet back plus your original bet amount. So if you put down $10 on the favored team and win, you'll get $30 back (three times your initial bet plus the original bet amount). However, three can also mean that the odds of winning for either team are equal. It's called a "push," and you'll get your original bet amount back. So if you put down $10 on a game with three odds and it's a push, you'll get your $10 back. Lastly, three can also mean potential winnings odds are against the favored team. In this case, it's called "3-to-1 against." If you bet on the favored team and lose, you'll get three times your original bet amount back. So if you put down $10 on the favored team and they lose, you'll get $30 back (three times your original bet amount plus the original bet amount). So, 3 in betting usually means that the odds of winning for the favored team are 3-1, but it can also mean that the odds are equal or against the favored team.