DraftKings is launching a promotional offer for new users this Saturday. The deal provides $300 in bonus bets if a customer's first $5 wager wins. The promotion applies to betting on Major League Baseball and National Basketball Association games scheduled for the day.

This type of sign-up bonus is a common customer acquisition tool in the competitive online sports betting market. Operators frequently use such incentives to attract new bettors ahead of major sporting events and weekends with full slates of games.