- WBA
- World Boxing Association.
- WBC
- World Boxing Council.
- Win only
- A type of 'If' bet where the wager continues on to the second bet only if the first bet wins. If the first bet is graded "Push" or "No Action" or the game is canceled altogether, your money is refunded.
- Window
- What some players say after winning a bet.
- Wise guy
- A sophisticated and successful sports bettor.
- WNBA
- Women's National Basketball Association.
- Wood
- The price of a heavy favorite. For example, if you bet the Red Sox as a -240 favorite, you "lay the wood" with the Red Sox.
- World Series
- The best-of-seven Major League Baseball (MLB) series where the American League (AL) and National League (NL) champions meet to determine the MLB champion.
