Punter

A bet that is cancelled and the stake is returned to the bettor. Bets can be voided for various reasons including event cancellation, player withdrawal, or if the bet was placed in error. In accumulators, a voided selection is removed and the bet is recalculated with the remaining selections.

A virtual advantage or disadvantage applied to a team or player to level the playing field in a sporting event. For example, a -1.5 goal handicap means the team must win by 2 or more goals for the bet to win. Handicaps are used to create more balanced betting markets.

The amount of money a bettor risks on a single wager. Proper stake sizing is a critical component of bankroll management. Most professional bettors recommend risking between 1% and 5% of your total bankroll on any single bet to minimize the risk of ruin.

A slang term for the favorite in a betting market. 'Playing the chalk' means betting on favorites. The term originated from the days when odds were written in chalk on blackboards. Heavy chalk refers to a strong favorite with very low odds.

The maximum amount a bookmaker or a lay bettor stands to lose on a single bet. For bookmakers, liability is managed across thousands of bets. On a betting exchange, when you lay a bet, your liability is the amount you must pay the backer if they win. Understanding liability is essential for exchange betting.

The first odds offered by a bookmaker for a specific event or market. Opening lines are typically released several days before an event and move based on betting action, news, and other factors. Sharp bettors often look for value in opening lines before the market corrects.