March Madness Betting Lines: NCAA Money Lines Explained

In March Madness betting, “lines” refer to the betting odds and point spreads set by sportsbooks for each game. These lines help balance action on both teams and can shift based on betting trends and new information. Whether you're betting on a point spread, moneyline, or total, understanding how lines work is key to making smarter bets throughout the tournament.

Types of Betting Lines

• Point Spread: A margin set by sportsbooks to even out the matchup.
  • Example: Duke -6.5 vs. Michigan → Duke must win by 7+ points to cover the spread.
• Moneyline: A straight-up bet on which team will win the game.
  • Example: Duke -180 | Michigan +150 → A $180 bet on Duke wins $100, while a $100 bet on Michigan wins $150.
• Over/Under (Total Points): A bet on the total combined score of both teams.
  • Example: O/U 143.5 → Bet the over if you expect 144+ points, or the under for 143 or fewer.
• Player Props: Bets on individual player stats like points, rebounds, or assists.
• Game Props: Bets on specific game events, such as the first team to score.

How Do Betting Lines Move?

Lines adjust based on betting action and new developments like injuries or public money flooding in on one side. This is called line movement, and smart bettors track shifts to find value bets. Early lines may look very different from those posted right before tip-off, which is why monitoring movement is a critical part of sports betting strategy.

Why Do Lines Change?

Sportsbooks adjust lines based on several factors:

• Injury News: If a star player is ruled out, the odds shift accordingly.
• Public Betting Trends: If too much money is placed on one team, sportsbooks adjust to balance the action.
• Sharp Bettors' Influence: Professional bettors (or sharps) can move lines when they place large, strategic wagers.
• Team Matchups & Recent Performance: Oddsmakers account for trends, such as how teams perform against the spread or in neutral-site games.

Understanding how and why lines shift can give you an edge when betting. Learn more with our guide to first and second half lines.

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