Totals, also known as over/under bets, involve predicting whether the total number of runs scored by both teams in a game will be over or under a specific number set by the sportsbook. The sportsbook sets a line, and you decide if the combined runs will be higher (over) or lower (under) than that line. Totals bets can be an exciting way to bet on a game without necessarily picking a winner. New information can lead oddsmakers to adjust their lines, which they set using various data sources prior to the original release. News like injuries, different starting pitchers, or even a change in the weather forecast can lead to a potential change in the outcome of a game. In response, oddsmakers will use this information to adjust the lines.& Affiliate Disclosure: Sportsbook Review may receive advertising commissions for visits to a sportsbook betting site.