$300 DraftKings promo code upgraded for Shelton, Djokovic at Australian Open

As of Wednesday, January 21, 2026, the latest DraftKings promo code offer allows new users to secure $300 in bonus bets just in time for tonight’s premier Australian Open matches. This high-value welcome package is one of the strongest ways for bettors to jump into the first Grand Slam of the year.

Tonight's slate features legendary champions and rising stars, including Novak Djokovic and Stan Wawrinka. In this article, we break down how the upgraded $300 bonus works, the key odds for tonight’s matchups, and why this is the best way to start your tennis betting journey this January.

What is the DraftKings Promo Code Offering with the $300 Bonus?

The DraftKings welcome offer is designed to reward winning bettors with a significant bankroll boost:

• The “Bet $5, Get $300” Offer: Sign up for a new account and place a simple $5 wager on any sports market to qualify for $300 in bonus bets.

• The Requirement: To unlock the $300 bonus, your initial $5 qualifying wager must win.

• The Payout: If your bet hits, you will receive $300 in bonus bets, issued as twelve (12) separate $25 bonus bet tokens.

• Ongoing Value: Existing users can also find Australian Open Profit Boosts (often ranging from 30% to 50%) in their rewards tab to use on tonight's matches.

How the DraftKings Promo Code Works

Follow these steps to qualify for the full $300 bonus:

1. Sign Up: Create a new DraftKings Sportsbook account through an official promotional link—no manual promo code is required.

2. Deposit: Make an initial deposit of at least $5 into your new account.

3. Place Your Bet: Wager at least $5 on any market with odds of -500 or longer (e.g., -400, -110, or +150).

4. Win to Unlock: If your qualifying $5 bet wins, you will receive the $300 in bonus bets within 72 hours of the wager settling.

Tonight’s Australian Open Matchups

Here are the featured betting lines for tonight’s Australian Open action (all times ET):

Betting Tip: To maximize your chances of unlocking the $300 bonus, many bettors look toward heavy favorites like Hubert Hurkacz (-401), as the minimum odds requirement for the promo is -500.

Terms and Conditions for the DraftKings Promo Code

When claiming your bonus, keep the following rules in mind:

• Eligibility: Must be a new customer, 21+ years of age (18+ in DC/KY/WY), and physically located in an eligible state (AZ, CO, CT, DC, IA, IL, IN, KS, KY, LA, MA, MD, ME, MI, MO, NC, NJ, NY, OH, PA, TN, VA, VT, WV, or WY).

• Bonus Expiration: Bonus bets expire 7 days (168 hours) after they are issued.

• Single Use: Bonus bet tokens are single-use and non-withdrawable.

• Stake Not Returned: If a wager placed with a bonus bet wins, only the winnings are paid out; the original bonus stake is not included in the return.

Conclusion: Start the Australian Open with $300

The first Grand Slam of the 2026 season is in full swing, and this DraftKings promo provides an ideal way to build your bankroll. Whether you are backing the dominance of Novak Djokovic or looking for an underdog upset from Stan Wawrinka, this "Bet $5, Get $300" offer is the premier way to watch tonight's action.

DraftKings Promo Code Disclaimer: 21+. Physically present in eligible states. Eligibility restrictions apply. MO: Register for a Missouri online sports wagering account starting 11/17. $5+ first-time bet when we go live on 12/1 req. Max. $300 issued as non-withdrawable Bonus Bets that expire in 7 days. National: Gambling Problem? Call 1-800-GAMBLER. Terms: sportsbook.draftkings.com/promos.