A deposit bonus in sports betting is an incentive offered by sportsbooks to attract new customers or retain existing ones. When a bettor makes their initial deposit, the sportsbook matches a percentage of that amount, providing extra funds to wager with. For example, a 100% deposit bonus up to $200 means if you deposit $200, you receive an additional $200 in bonus funds. This bonus can enhance the betting experience, allowing users to explore more betting options and increase their potential winnings. However, it's essential to understand the terms and conditions, including wagering requirements, before claiming the bonus.