Polymarket Promo Code CHECK: Get a $20 Bonus for the 2026 US Open

Polymarket Promo Code CHECK: Get a $20 Bonus for the 2026 US Open

By registering with the Polymarket promo code CHECK, tennis fans and prediction traders can claim a $20 trading bonus ahead of the 2026 US Open. CLICK HERE to get started today!

Scheduled to kick off main draw play today at Flushing Meadows, the final Grand Slam of the season features the world's elite players competing across two weeks in Queens, NY.

Instead of traditional fixed-odds sportsbooks, Polymarket operates as a peer-to-peer event exchange. Traders buy and sell binary outcome shares priced between 1¢ and 99¢ based on live market probability, with every winning contract resolving at 100¢ ($1.00).

Follow our step-by-step guide below to claim your promo bonus, view live contract pricing, and review platform FAQs.

How to Claim the Polymarket $20 Promo Code

Follow these steps to redeem the Deposit $10, Get $20 offer using promo code CHECK:

Step 1: CLICK HERE or download the official Polymarket U.S. app

Step 2: Tap “I have a referral code” and enter CHECK

Step 3: Complete signup using your Apple or Google login

Step 4: Add a payment method and deposit at least $10

Step 5: Make your first qualifying trade - your $20 trading bonus is issued automatically (Bonus funds are non‑withdrawable, but profits from trades are yours.)

2026 US Open Polymarket Prediction Markets

(Note: Polymarket binary shares fluctuate continuously between 1¢ and 99¢ based on live supply and demand. Winning contracts resolve at 100¢ ($1.00), while losing positions settle at 0¢).

Men's Singles Outright Winner

• Carlos Alcaraz: 28¢ Buy Yes / 73¢ Buy No ($947,489 Vol. | 28% Probability)
• Alexander Zverev: 23.1¢ Buy Yes / 77.0¢ Buy No ($493,824 Vol. | 23% Probability)
• Novak Djokovic: 11.5¢ Buy Yes / 89.2¢ Buy No ($891,754 Vol. | 11% Probability)
• Arthur Fils: 7.3¢ Buy Yes / 92.8¢ Buy No ($516,851 Vol. | 7% Probability)
• Taylor Fritz: 6.6¢ Buy Yes / 93.5¢ Buy No ($432,354 Vol. | 7% Probability)
• Ben Shelton: Buy Yes 6.0¢ ($444,648 Vol. | 6% Probability)

Women's Singles Outright Winner

• Aryna Sabalenka: 23¢ Buy Yes / 78¢ Buy No ($91,525 Vol. | 23% Probability)
• Coco Gauff: 16.0¢ Buy Yes / 84.6¢ Buy No ($92,447 Vol. | 16% Probability)
• Iga Swiatek: 16¢ Buy Yes / 86¢ Buy No ($63,428 Vol. | 15% Probability)
• Jessica Pegula: 6.9¢ Buy Yes / 93.2¢ Buy No ($134,091 Vol. | 7% Probability)
• Naomi Osaka: 7.0¢ Buy Yes / 93.3¢ Buy No ($66,941 Vol. | 7% Probability)
• Mirra Andreeva: Buy Yes 6.0¢ ($74,286 Vol. | 6% Probability)

Polymarket Promo Code FAQs for the 2026 US Open

What is the active Polymarket promo code for the US Open?

The active referral code is CHECK. Entering this code during profile registration unlocks a $20 trading bonus once you complete a $10 deposit and place your first trade.

How do payouts work on Polymarket for tennis contracts?

All shares function as binary contracts priced between 1¢ and 99¢. For example, if you buy Carlos Alcaraz at 28¢ and he wins the tournament, each share resolves at 100¢ ($1.00), yielding a 72¢ profit per share.

Can I trade out of my position before the tournament ends?

Yes. Polymarket features a live peer-to-peer order book. If a player advances through early rounds and their price rises (e.g., from 16¢ up to 40¢), you can sell your shares mid-tournament to lock in profit or cut potential losses.

Are profits earned with the $20 bonus withdrawable?

Yes. While the $20 bonus tokens themselves are non-withdrawable promotional funds, all net profits generated from trades placed with your bonus credits belong to you and can be withdrawn immediately.

Polymarket Disclaimer

18+ Only. Restrictions and eligibility requirements apply. Not available in all jurisdictions. Trading is risky. 100% loss can occur. See polymarket.com/tos for more information. The Polymarket US App serves as an independent software provider and affiliate of Polymarket US and Polymarket Clearing, the CFTC-regulated exchange and clearing organization.