We expect the Ravens to be much better than the Texans this season, which is why Baltimore is -450 against Houston in the opener. Moneylines use American odds, which are centered around a $100 bet, though it scales up and down depending on your bet size. The sportsbook isn't giving you the better team at the same price as an inferior team. But the odds are adjusted based on each team or player's ability, so the amount you win or lose can vary greatly, depending on the event.
A moneyline bet is a wager on a team to win a game.