This page may contain affiliate links. If you click a link and register for an account, fund an account, or complete another qualifying action through one of those links, The Sporting News may receive compensation. Our commercial relationships do not affect our editorial coverage. Terms, availability, and eligibility restrictions may apply. Learn more about Prediction Markets at The Sporting News.
Whenever there's a fresh chance to boost our bankroll, I want to make sure we're in this together. By utilizing the Polymarket promo code TSN here, new customers can get a $50 sign-up bonus after making an initial deposit of at least $10. With NFL Week 1 just hours away as the Seahawks host the Patriots, now is the time to get started with one of the leading prediction apps.
Meanwhile, this welcome offer provides the perfect extra capital for today's MLB games, like the Washington Nationals taking on the San Diego Padres. Once your account is funded, you can use this bonus for today's matchups, any MLB game this week, or even pivot over to college football to trade on the upcoming SMU vs. Florida State clash, giving you the ultimate flexibility to navigate the board and chase a nice pay day.
Polymarket Promo Code TSN Activates $50 Welcome Bonus
| New User Offer | $50 Bonus |
| Terms and Conditions | 18+ and Present in the US |
| Date Last Verified | September 7, 2026 |
The current welcome offer is exclusively available to new Polymarket customers who are 18 years of age or older and physically located in an eligible Polymarket operating state. To qualify for the reward, simply register your first account and make a qualifying initial deposit of at least $10. Once that deposit successfully processes, the $50 sign-up bonus will be unlocked and added directly to your account balance.
With your newly acquired $50 sign-up bonus, you'll be well-equipped to tackle today's exciting MLB slate. You can immediately use your extra funds to back the St. Louis Cardinals as they push for a wild-card spot at Oracle Park against the San Francisco Giants, or deploy your bonus on the Toronto Blue Jays' late-night matchup against the Athletics. Whatever angle you choose to play, this bonus provides the perfect bankroll boost for today's baseball action.
MLB Games on Labor Day
| WSH @ SD | WSH +165 / SD -195 | 36.3% / 63.7% |
| STL @ SF | STL +112 / SF -131 | 45.4% / 54.6% |
| CIN @ LAD | CIN +147 / LAD -172 | 39.0% / 61.0% |
| TOR @ OAK | TOR -204 / OAK +173 | 64.7% / 35.3% |
When I'm handicapping the morning line, I always look at the extremes to see where our money works hardest. If you want to back today's heaviest favorite, a $10 wager on the Toronto Blue Jays' moneyline (-204) yields a $4.90 profit. Conversely, if you love a live underdog, taking a chance on the Athletics (+173) would win you a handsome $17.30 profit on a $10 bet if they pull off the upset.
Taking a closer look at that Blue Jays and Athletics matchup, Toronto's status as a massive favorite is heavily supported by a massive pitching advantage. AL Cy Young candidate Dylan Cease is on the bump for a Blue Jays staff that boasts a collective 3.92 ERA and 1.30 WHIP, vastly outperforming Oakland's struggling arms (5.40 team ERA and 1.49 WHIP).
Over in the Nationals and Padres tilt, San Diego (-195) holds a similar edge. With Nick Pivetta returning to the rotation for a Padres squad actively chasing a wild-card berth, San Diego's 3.91 team ERA safely outshines Washington's 4.72 mark. There's real statistical value on these home favorites, and I'm placing these bets with confidence.
Guide for Using the Polymarket Promo
Claiming your welcome offer is a simple and straightforward process. There is nothing better than getting set up quickly so you can focus on the games. Follow these steps to get your account ready for action:
- Create an Account: Register a new account here by providing standard personal information, such as your name, email, and date of birth.
- Verify Your Identity: Submit the required proof of identification to securely verify your new account.
- Apply the Promo Code: During the registration process, ensure you enter Polymarket promo code TSN to opt into the welcome offer.
- Make a Deposit: Complete the activation by making a first-time deposit of at least $10.
Once your initial deposit is processed, your $50 bonus will be activated. You will then be fully equipped to navigate the board and back your favorite teams, whether you are looking to place a wager on the Washington Nationals taking on the San Diego Padres or the Cincinnati Reds clashing with the Los Angeles Dodgers.

1 hour ago
2
English (US)