This happens when a sportsbook adjusts its odds in response to an overwhelming number of bets being placed on a particular team or outcome. The sportsbook alters the odds to balance its potential payout risk, often shifting the odds to make the other side more attractive to bettors. Bumping can occur when sharp bettors place large wagers or when a sudden public sentiment shift happens due to news or updates about a game.
Bumping Example
For example, if a large number of bets are placed on Team A to win, the sportsbook may lower the odds for Team A and increase the odds for Team B to encourage more balanced betting.