Kalshi $10 Promo Code for the US Open First Round on August 31st
The US Open is back, with the First Round kicking off this weekend on the hard courts at the USTA Billie Jean King National Tennis Center in Flushing Meadows, Queens, New York, and Kalshi has the event contracts live.
Hot on the cards are Carlos Alcaraz and Aryna Sabalenka, now fielded as the likely favorites to win the Men’s & Women’s Singles Winner brackets. Plus, there’s more to pick from in H2H matchups as the First Round progresses. Better yet, you get a $10 match bonus with code to lock in your favorites. Here’s more.
| US Open Singles Winner | YES Price | Implied Probability |
|---|---|---|
| Men’s: Carlos Alcaraz | ¢28 | 28% |
| Men’s: Alexander Zverev | ¢23 | 23% |
| Women’s: Aryna Sabalenka | ¢23 | 23% |
| Women’s: Iga Swiatek | ¢15 | 15% |
How Kalshi sees the US Open First Round
It’s finally here: the US Open First Round kicks off this weekend, August 30th to September 1st at the USTA Billie Jean King National Tennis Center in Flushing Meadows, Queens, New York, and there’s a lot to look forward to; even the best prediction market sites, like Kalshi, are jumping in with event contracts now live. So, what are the emerging storylines across fans and analysts’ circles alike?
Well, for one, Carlos Alcaraz, the defending champion (he beat Jannik Sinner in the 2025 final), is back. He has been on hiatus since April 14 on account of a right wrist injury, thus missing the French Open, Wimbledon, and the North American hard-court tournaments. Most shocking to hit prediction market news has to be Jannik Sinner’s withdrawal. He’s pulling out due to a lingering right knee injury, a move that removed a clear pre-tournament favorite. Now, Alcaraz is topping the charts as the most likely to win the US Open Men’s Singles bracket, with Alexander Zverev, Novak Djokovic, etc., hot on his tail.
Cue the Women’s side, and it’s more tame with Aryna Sabalenka, two-time defending champion and top seed, chasing a three-peat win at a 23% likelihood, vis-à-vis the likes of Coco Gauff and Iga Swiatek by sports prediction markets prices (tying at 15%). So, who’s likely to win? Kalshi has a $10 match bonus with code that you can use to make your picks.
Why use Kalshi to trade the US Open First Round?
Kalshi needs little introduction. It’s one of the best CFTC-regulated sports prediction markets and a household name that aces all the basics, from beginner-friendliness to a $10 match bonus that you can claim using our Kalshi promo code . Cue the US Open First Round, and they’ve event contracts live, spanning singles and doubles for both the Men’s and Women’s sides. That’s alongside futures and granular markets, like exact match score, nationality props, set winner, total games, etc. All live for you to lock in your picks early ahead of match day.
How to claim your Kalshi $10 bonus for the US Open First Round matches
Now that you’re well informed of the US Open first round, the competitors/players, storylines to watch, and the prediction market’s workings, as covered in our exhaustive Kalshi review. Claiming your $10 Kalshi sign-up bonus using our promo code is easy-peasy. To begin:
- Click on any of the on-page Kalshi banners you see on this page; it will take you directly to the official Kalshi website.
- Once in the home lobby, pan out to the top right and tap the green “Sign Up” button, and follow the on-screen prompts.
- Remember to enter our Kalshi promo code: in the field provided and submit the sign-up form.
- Thereafter, deposit $10 into your account and make a qualifying trade to unlock your Kalshi sign up bonus for the US Open First Round.
Lock in your US Open First Round predictions
The final Grand Slam of 2026 is upon us, with the US Open First Round going down at the USTA Billie Jean King National Tennis Center from August 30th to September 1st. Even with the qualifying week left to play before the First Round, Carlos Alcaraz is the leading contender (by 28% likelihood) to win the Men’s competition, with Alexander Zverev hot on his heels. Similar assessments go to the Women’s side with the likes of Aryna Sabalenka and Iga Swiatek. All that remains is to join in with our promo code to claim the starter bonus and lock in your picks ahead of time.