Moneyline Betting Explained
A moneyline bet is the simplest wager in sports: pick the team you think will win the game. No spreads, no totals; just who hoists the W.
How American moneyline odds work
Iowa sportsbooks display moneylines using American odds. Negative numbers mark the favorite, positive numbers mark the underdog.
NFL example: Chiefs vs Vikings
| Kansas City Chiefs | -180 | Bet $180 to win $100 |
| Minnesota Vikings | +155 | Bet $100 to win $155 |
The Chiefs are 1.8x favorites. To net $100 profit on KC, you wager $180. Take the Vikings as +155 underdogs and a $100 ticket pays $155 profit if they pull off the upset.
Calculating implied probability
Convert moneyline odds to implied win probability to spot value:
- Favorites:
-odds / (-odds + 100) × 100→ -180 implies 64.3% win probability. - Underdogs:
100 / (odds + 100) × 100→ +155 implies 39.2% win probability.
The two probabilities sum to 103.5%, not 100%; the extra 3.5% is the sportsbook's vig (juice). Beating the moneyline long-term means picking winners more often than the implied probability suggests.
When to bet the moneyline
- Heavy underdogs in single-game scenarios. A +280 underdog only has to win the game, not cover a spread.
- Low-scoring sports like baseball and hockey. Moneylines are the dominant market because run-line and puck-line spreads are tight.
- March Madness and bowl games. Hawkeyes and Cyclones moneylines are the most popular Iowa college bets.
When to avoid the moneyline
Avoid heavy NFL or NBA favorites at -300 or worse. The risk-to-reward becomes unfavorable: one upset wipes out three winning tickets. In those cases, move to the point spread for better value.
Where to bet moneylines in Iowa
Every licensed Iowa sportsbook offers moneyline markets. For the sharpest pricing on heavy favorites, Circa Sports and SuperBook typically post the lowest vig. For deepest market list (futures, alt moneylines, regional college games), DraftKings and FanDuel lead.