NewzThe Polymarket promo code CLEVE has been activated for White Sox vs. Astros, and its $50 bonus is live on a $10 deposit. New users registering with the Polymarket promo code CLEVE deposit $10 and receive a $50 bonus—$60 in total trading funds before the first market moves.
The Kalshi promo code CLEVELAND55 has gone live ahead of White Sox vs. Astros on Tuesday, September 29, 2026, with Kalshi MLB markets already actively trading. The Kalshi promo code CLEVELAND55 returns a $55 bonus to new users who deposit $25 at registration—an expanded match that opens a first account with $80 in total trading funds, valid on every market Kalshi lists.
Summary from source