What Does ‘Wise Guy’ Mean in Sports Betting?

In sports betting, a “Wise Guy” (often just called a “Wiseguy”) is a slang term for a professional, highly skilled bettor.
They are the exact opposite of the “Public” or “Square” bettor.
While you bet for fun and entertainment, a Wise Guy bets for a living. They treat betting like a business, using advanced math, insider information, and strict money management to consistently beat the sportsbooks.
Why You Should Care About Them
The most important thing to know about Wise Guys is that they move the lines.
Sportsbooks respect their opinion. If a Wise Guy places a huge bet on a team, the sportsbook assumes the Wise Guy knows something they don’t.
- The Scenario: 80% of the public is betting on the Chiefs -3.
- The Wise Guy Move: A known Wise Guy (or syndicate) drops $50,000 on the Raiders +3.
- The Reaction: Even though most tickets are on the Chiefs, the sportsbook respects the Wise Guy’s money and skill so much that they immediately move the line to Chiefs -2.5 to protect themselves.
This is called “Reverse Line Movement”—when the line moves in the opposite direction of the popular vote because “smart money” (Wise Guy money) has arrived.
A Quick Note on the Name
The term “Wise Guy” comes from the old days of illegal gambling and mob movies (think Goodfellas). Back then, it implied someone who was “connected.”
Today, it just means a Sharp—someone who is smarter than the average bettor and wins long-term.