News OSS XL Kicks Off This Sunday with $50 Million Guaranteed September 5, 2025 Posted by Americas Cardroom Americas Cardroom URL has been copied successfully! Just days after wrapping up our Dual Mystery Bounty Venom tournaments, we’re launching an extra-large edition of our flagship Online Super Series — and it all starts this Sunday. From September 7th through 30th, the OSS XL offers a massive $50 Million in guarantees, with events for every type of player. Buy-ins range from super small to high, and the schedule is stacked with must-play tournaments. Main Highlights $2 Million, $1.5 Million, and $750K Main Events with Day 1 options on Sunday, September 21st and 28th. $1.5 Million and $500K (Mystery Bounty) Multi-Flight tourneys, with flights starting this Sunday. Big Events This Sunday, September 7th OSS #14 – $250,000 GTD Euro High Roller ($630 buy-in) – 10:30am ET OSS #15H – $300,000 GTD Mystery Bounty ($215 buy-in) – 11:30am ET OSS #16H – $750,000 GTD Sunday High Roller ($630 buy-in) – 12:05pm ET OSS #17 – $500,000 GTD Sunday Banana Day 1 ($1,050 buy-in) – 1:05pm ET OSS #18 – $600,000 GTD Super High Roller ($2,650 buy-in) – 1:05pm ET Extra-Large Prizes on Top To match the XL spirit, we’re also running a $65,000 Leaderboard Contest, fully funded by us. Earn points in every OSS XL event based on your finish. Three separate leaderboards — High, Medium, and Low buy-ins — mean everyone has a chance to win, no matter their bankroll. Full Schedule & Leaderboard Check out the OSS XL promo page for the complete schedule and to see real-time leaderboard results.