Sign up today using the Polymarket promo code ACTION and secure a $50 trading bonus on Thursday, June 18. The 2026 U.S. Open is underway, with Scottie Scheffler and Rory McIlroy looking to add another major championship to their legacy. Use the best U.S. Open prediction market app and trade on the third golf major of the year.
To claim the $50 trading bonus with the Polymarket promo code ACTION, you must make a qualifying $20 deposit. The opening round of the U.S. Open is already underway, with TV coverage on USA until 5 p.m. ET.
The U.S. Open presents plenty of trading opportunities, with the world's top golfers competing for one of the sport's most prestigious titles. Rory McIlroy (7:52 a.m. ET) and Scottie Scheffler (8:14 a.m. ET) are among the early starters as they chase another major victory.
In addition to the U.S. Open, you can also trade on World Cup odds, with four matches on today's schedule. Claim your $50 bonus with the Polymarket referral code ACTION in these states: AK, AL, AR, CA, CO, CT, DC, DE, FL, GA, HI, IA, ID, IN, KS, KY, LA, ME, MN, MO, MS, NC, ND, NE, NH, NJ, NM, NY, OK, OR, PA, RI, SC, SD, TN, TX, UT, VA, VT, WA, WI, WV, and WY.
Polymarket Promo Code ACTION: Trade on U.S. Open Golf Today
Use the Polymarket promo code ACTION and unlock a $50 bonus. Make your first trade on any U.S. Open market with one of the best prediction market apps.
All eyes will be on Scottie Scheffler this week as he takes his first shot at completing the career Grand Slam. While he's the tournament favorite, our experts at Action Network still see value on Scheffler to win the U.S. Open.
U.S. Open Prediction: Scottie Scheffler to Win (13%): Despite concerns about his recent form and frustration on the course, the data still rates Scottie Scheffler as the best player in the field over the last 24 rounds and the strongest fit for Shinnecock Hills. With his odds drifting higher than they would have been earlier in 2026, there's enough value to justify backing the world No. 1 to complete the career Grand Slam this week.
Make a $50 trade on Scheffler to win the U.S. Open, and you earn a $347.93 return if he's victorious. Use the best U.S. Open prediction market app to trade on additional markets throughout the tournament.
Don't miss out on the Polymarket referral code ACTION and unlock a $50 bonus for the U.S. Open, World Cup, or any sporting event today.
How to Sign Up Using Polymarket Referral Code ACTION
- Download the app: Install Polymarket on your iPhone or Android device through the official mobile app store.
- Select “I Have a Referral Code”: During registration, enter the Polymarket referral code ACTION to activate the promo.
- Create your account: Register using your Apple or Google credentials.
- Verify your identity: Complete the age and identity verification process by submitting your phone number and personal details.
- Deposit at least $20: Make a qualifying first-time deposit of $20 or more to unlock the $50 bonus credits.
- Start trading: Once funded, you can use your balance on the U.S. Open or any other available market on the platform. Before placing a trade, use a betting odds calculator to compare implied probabilities and identify potential value.
Must be 18 years or older and have a legal, U.S. residential address within the applicable state, D.C., or U.S. territories. Not available in AZ, IL, MA, MD, MI, MT, NV, and OH.
