Fox Sports publishes promotional messages for Polymarket that claim users can unlock a $50 bonus by using specific promo codes tied to World Cup games. One post promotes the code “FOX,” stating it provides a $50 bonus for Uruguay vs. Saudi Arabia, or for any other Monday World Cup game. Another Fox Sports promotion also uses the “FOX” code and says it can be applied for a $50 bonus for Argentina vs. Algeria, while also offering the option to choose other World Cup matches. The materials are promotional in nature and focus on the availability of the bonus and how to redeem it with a code. The posts do not, in the provided text, include further details such as eligibility requirements, wagering terms, payout conditions, deadlines, or limits on the bonus offer. Overall, the sources agree that the promotions are for Polymarket, that the stated bonus amount is $50, and that the promo code referenced is “FOX,” with applicability to multiple World Cup match selections.