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Americas Cardroom Launches OSS XL: A $50 Million Guaranteed Poker Series – Complete Guide

By jili tutorial · September 9, 2026

Americas Cardroom Launches OSS XL: A $50 Million Guaranteed Poker Series – Complete Guide

Overview: What Is the OSS XL Series?

On Sunday, Americas Cardroom kicked off its latest major online poker tournament series: the Online Super Series XL (OSS XL). This year’s edition features an enormous $50 million in guaranteed prize pools spread across 336 events, running from the opening Sunday through September 29. The series is designed to cater to players of all bankrolls, from low-stakes grinders to high-roller specialists.

The opening day alone produced several headline-grabbing results, with multiple events already surpassing their guarantees and players walking away with six-figure scores. Below, we break down the key highlights, explain the structure of the series, and provide context on what makes OSS XL one of the most anticipated poker festivals of the year.

Opening Day Highlights: Big Prizes and Big Names

High Roller #13: A $130K Victory

The first major milestone came in OSS XL #13, a $600,000 guaranteed High Roller event. With 1,118 entries, the prize pool swelled to $670,800 – exceeding its guarantee by more than $70,000. The winner, a player going by the alias BADGERING, took home $130,209.51.

This event illustrates a key trend in modern online poker: high-stakes tournaments often attract more players than expected, especially when the buy-in is set at a level that appeals to both pros and ambitious amateurs.

High Roller #16: A Three-Way Deal

Another premium event, OSS XL #16, with a $2,650 buy-in, drew 203 entries, pushing the prize pool to $507,500 (also above its guarantee). The final table agreed to a deal, resulting in the following top payouts:

Deals at final tables are common in high-stakes tournaments, as players often prefer to reduce variance and lock in a guaranteed payout rather than risk everything for a single winner-take-all prize.

Mid-Stakes Events Draw Massive Fields

The opening day wasn’t only about the big buy-ins. Two lower-cost tournaments demonstrated the broad appeal of the series:

These numbers highlight how OSS XL offers opportunities for players at every level to compete for life-changing money with relatively small investments.

Mystery Bounty and Omaha Events

Two other popular formats also had their spotlight on opening day:

The Full OSS XL Schedule: 336 Events and $50 Million Guaranteed

The opening Sunday was just a taste of what’s to come. The OSS XL series runs through September 29 and includes:

Main Events Breakdown

Main EventBuy-InGuarantee
Main Event #1$2,650$2,500,000
Main Event #2$1,050$2,000,000
Main Event #3$66$500,000

These three tournaments are the crown jewels of the series. The $2,650 Main Event, in particular, is a flagship event that will attract top players from around the world.

Multi-Flight Events

Multi-flight (or “multi-day”) tournaments allow players to enter on multiple starting days, giving them flexibility and a chance to re-enter if they bust early. This format is popular because it increases the total prize pool while giving players more chances to succeed.

Nosebleed Stakes

For the highest rollers, the 10 Nosebleed Stakes events offer buy-ins that can exceed $10,000. These tournaments are often won by professional players and can produce seven-figure payouts.

How to Get Involved: Reload Bonus and Other Promotions

If you’re planning to play in OSS XL, take advantage of a 50% Reload Bonus available through September 10. The bonus is up to $500 and applies to qualifying reloads of at least $25 when you use the code HUGE.

Example:

This bonus can be used to enter OSS XL events or to build your bankroll for the series.

The 25th Anniversary Tournament: A Milestone Event

The OSS XL series is not alone on the September calendar. Americas Cardroom is also hosting a $2.5 million guaranteed 25th Anniversary Tournament. This is a $250 cumulative-stack event (meaning players can re-enter or add on to their stack across multiple starting flights). The final table is scheduled for September 29, the same day OSS XL ends.

This dual schedule means September is packed with high-value tournaments for players of all skill levels.

About Americas Cardroom (Formerly ACR Poker)

Americas Cardroom (formerly known as ACR Poker) has been a key player in the online poker world since it joined the Winning Poker Network (WPN) in 2011. However, the network’s roots go back even further—it has been dealing cards since 2001.

The site is consistently ranked as one of the most trusted names in online poker, particularly for:

Americas Cardroom is licensed in Costa Rica and serves players from most parts of the world, including the United States (except for a few restricted states). Its longevity and reputation make it a go-to site for serious online poker players.

What Makes OSS XL Unique?

The OSS XL series stands out for several reasons:

  1. Massive Guarantees – $50 million across 336 events is one of the largest online series of the year.
  2. Variety of Formats – From NLHE to PLO, Mystery Bounty to PKO, the schedule covers nearly every popular tournament type.
  3. Accessible Entry Points – With buy-ins as low as $16.50, the series is open to recreational players as well as professionals.
  4. Leaderboard Prizes – More than $60,000 in additional prizes for players who accumulate the most points across multiple events.
  5. Overlays – Because many events have large guarantees, players often benefit from overlays (when the prize pool exceeds the number of entries, meaning players get more value for their buy-in).

Final Thoughts: Is OSS XL Worth Playing?

If you enjoy online tournament poker, the OSS XL series is one of the best opportunities of the year. The combination of huge guarantees, diverse formats, and the chance to compete against both amateurs and professionals makes it an exciting event. Whether you’re a micro-stakes grinder or a high-stakes shark, there’s something for you.

Remember to use the reload bonus code HUGE before September 10 to maximize your bankroll. And if you haven’t already, create an Americas Cardroom account to take part in what promises to be a thrilling September of poker.