No OG promo code is needed to get started with one of the best prediction market apps available right now. New users who sign up on Aug. 3 can earn a $10 reward by trading on Sunday's packed MLB and WNBA slate, which features marquee matchups like Red Sox-Dodgers and Fever-Lynx.
Trade $10 & Get $10
OG Promo Code Offer: Trade $10, Get $10 on MLB and WNBA Markets
The OG promo code offer requires no code at all, making it one of the simplest welcome promotions available on any prediction market platform. To qualify, new users must verify their account, confirm their eligibility, and settle at least one qualifying trade worth $10 or more within seven days of identity verification (KYC) approval. Sunday's MLB and WNBA slate is a strong starting point for that first trade.
Here are the key terms to keep in mind before you begin:
- Minimum qualifying trade: $10
- Trades must have an implied probability below 80% to count
- Trades placed using reward funds do not qualify
- The promotion expires seven days after account verification
- Only trades that settle within the seven-day window are eligible
For example, if you trade $10 on the Red Sox-Dodgers market and your prediction is correct, you receive your payout when the market settles and unlock your $10 reward. If your prediction does not land, the trade still counts toward the promotion as long as it meets the eligibility criteria. You can also exit a position early by selling your contracts at the current market price before settlement.
For a broader look at what is available across the industry, check out the best prediction market promos compared in one place.

How to Claim Your $10 Reward for Sunday's MLB and WNBA Slate
Getting started on OG.com is straightforward. Follow these steps to sign up and place your first qualifying trade on Sunday's action:
- Register: Visit OG.com or download the OG app and click "Sign Up." Enter your email address, verify it, and provide your mobile phone number. Create a passcode and complete identity verification by submitting your full name, date of birth, and the last four digits of your Social Security number. A government-issued ID or proof of address may also be required.
- Deposit funds: Add money to your account using a debit card, Apple Pay, Google Pay, ACH bank transfer, or wire transfer. ACH transfers require a minimum deposit of $1, while debit cards require a minimum of $10.
- Place your first trade: Browse available markets, including Sunday's MLB and WNBA matchups, and select a "Yes" or "No" outcome. Enter at least $10 and confirm your trade. Make sure the market's implied probability is below 80% for the trade to qualify.
- Settle your trade: Wait for your trade to settle within the seven-day window following KYC approval. Once it does, your $10 reward will be applied to your account.
- Withdraw your earnings: Head to your portfolio and click "Withdraw." Link your bank account through Plaid and request a transfer. Most withdrawals are processed within 24 hours, with a daily maximum of $100,000.
For a full breakdown of the platform and its features, read the complete OG.com Review.
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