The Polymarket invite code CUSE has officially launched for MLB and tennis on Sunday morning, May 31st, 2026, delivering an immediate $50 sign-up bonus to new accounts right as the French Open futures market sees massive volatility. This Polymarket invite code clears a direct path to trade the live tennis markets waitlist-free, giving users immediate utility to engage with the updated outright winner boards following a historic upset at Roland Garros. ...read more read less