Moneyline: What It Means and How It Works

What Is a Moneyline?

A moneyline is a type of sports bet where you simply wager on which team or player will win a game or match outright. There's no point spread to worry about — your side just has to win. It's the most straightforward bet in sports wagering, and it's a great starting point for understanding how odds work across the board.

Moneyline odds are displayed as a positive or negative number, like +150 or -180. Those numbers tell you two things at once: who the sportsbook thinks is more likely to win, and how much you stand to win or lose on a given bet.

How to Read Moneyline Odds

The sign in front of the number is everything.

Negative moneyline (e.g., -180): This marks the favorite — the side the sportsbook expects to win. The number tells you how much you need to bet to profit $100. So with -180 odds, you'd need to risk $180 to win $100 in profit. If you win, you get your $180 back plus $100. If you lose, you're out $180.

Positive moneyline (e.g., +150): This marks the underdog — the side less expected to win. The number tells you how much profit you'd make on a $100 bet. With +150 odds, a $100 bet returns $150 in profit (plus your original $100 back) if you win.

A quick real-world example: Imagine a tennis match between two players. Player A is listed at -200 (the favorite), and Player B is listed at +165 (the underdog).

• Bet $200 on Player A and win → you profit $100
• Bet $100 on Player B and win → you profit $165
• In both cases, a loss means you forfeit your entire wager

Why the Moneyline Matters Beyond Just Picking a Winner

Here's the part most casual bettors overlook: the odds on both sides of a moneyline don't add up to a perfectly fair 50/50 split. That gap is called the vig (short for vigorish), also known as the juice or house edge on the bet. It's how sportsbooks make money regardless of the outcome.

For example, on a coin-flip-style game, a truly fair market might offer +100 on both sides. Instead, you'll commonly see something like -110/-110 — meaning you have to bet $110 to win $100 on either team. That extra $10 on each side is the sportsbook's built-in margin.

On heavily lopsided matchups, the vig can be baked in less obviously, but it's always there. Before placing any moneyline bet, it's worth calculating the implied probability — the win percentage the odds assume your pick needs to have just to break even over time.

To calculate implied probability:

• For negative odds: Divide the number by (the number + 100). So -180 → 180 ÷ 280 = 64.3%
• For positive odds: Divide 100 by (the number + 100). So +150 → 100 ÷ 250 = 40%

That means to profit long-term betting a -180 favorite, you'd need to be right more than 64.3% of the time — just to overcome the vig.

A Realistic Way to Think About It

Think of a moneyline like buying a raffle ticket where the prize and the ticket price shift based on how popular each option is. Backing the favorite is like buying a cheap ticket for a small prize — you win more often, but each win pays less. Backing the underdog is the opposite — bigger potential payoff, but fewer wins. The sportsbook sets those prices to ensure they come out ahead across thousands of bets, regardless of who wins any single game.

That doesn't mean moneyline bets aren't worth understanding — they absolutely are. But going in with clear eyes about the built-in cost makes you a more informed bettor.

*If gambling is causing stress, financial strain, or conflict in your life, free help is available 24/7 through the National Problem Gambling Helpline: 1-800-522-4700.*