News ACR Poker Unveils OSS XL With 336 Events and $50M+ in Guarantees Owen Gaines Owen Gaines is a professional poker player and author who has played an estimated ten million hands and written four poker strategy books. August 27, 2026 The September 6-29 series features three Main Events, four major multi-flights, 10 Nosebleed Stakes tournaments and a $60,000+ Leaderboard Competition.ACR Poker is turning September all the way up. From September 6-29, the Online Super Series XL will bring 336 events and more than $50 million in guarantees to the tables, giving players 24 days to find the buy-ins, formats and starting flights that fit them best.The biggest attractions include three Main Events, four major multi-flights and 10 Nosebleed Stakes tournaments. Players can also chase added cash and tournament tickets through three leaderboard levels or try to win OSS XL seats through The Beast.One Schedule, Plenty of Ways InThe three Main Events account for $5 million in combined guarantees, with buy-ins of $2,650, $1,050 and $66. The four multi-flights add another $2.225 million guaranteed, beginning at a $5.50 buy-in.Higher up the schedule, the Nosebleed Stakes run from September 21-28 with buy-ins from $5,000 to $25,000. More OSS XL events are also being placed in US-friendly time slots, which should make the series easier to play without turning every session into an accidental all-nighter.Seven Headliners Carry the Biggest NumbersThe Main Events and multi-flights form the center of the schedule. Here is the essential lineup, including the dates players need to circle. Seven Headliners Carry the Biggest NumbersEventGTDBuy-InKey Dates $2.5M Main Event$2.5M$2,650Day 1A: Sep. 20; Day 1B: Sep. 27; Day 2: Sep. 28; FT: Sep. 29 $2M Main Event$2M$1,050Day 1A: Sep. 20; Day 1B: Sep. 27; Day 2: Sep. 28; FT: Sep. 29 $500K Main Event$500K$66Day 1A: Sep. 13; Day 1B: Sep. 20; Day 2: Sep. 27 Main Multi-Flight$1.5M$630Day 1s: Sep. 6-28; Day 2: Sep. 28 Mystery Bounty Multi-Flight$500K$109Flights: Sep. 6-21; Day 2: Sep. 21 Mystery Bounty Multi-Flight$150K$33Flights: Sep. 6-27; Day 2: Sep. 27 Mystery Bounty Multi-Flight$75K$5.50Flights: Sep. 6-27; Day 2: Sep. 27 The $66 Main Event also has $6.60 satellites, giving players a lower-cost route into its $500,000 guarantee. The two larger Main Events share their final stretch, with Day 2 on September 28 and their final tables on September 29.The multi-flights spread their starting opportunities across the series. The $1.5 million guaranteed Main Multi-Flight runs Day 1s through September 28, while the three Mystery Bounty events conclude on either September 21 or September 27.Nosebleeds Up Top, Leaderboards Across the BankrollFrom September 21-28, OSS XL moves into its highest-priced stretch with 10 Nosebleed Stakes tournaments. Buy-ins range from $5,000 to $25,000, creating eight days aimed squarely at players comfortable where the air gets thin and the pots get serious.The OSS XL also includes more than $60,000 in added cash and tournament tickets across three leaderboard levels. Each category has its own first-place prize, so players do not need a big bankroll to compete for something extra.High Leaderboard: Buy-ins of $104.50 or more, with $15,000 for first place.Medium Leaderboard: Buy-ins from $16.50 to $88, with $7,500 for first place.Low Leaderboard: Buy-ins under $15, with $4,000 for first place.That turns every eligible finish into more than a single-tournament result: players can cash in the event and keep building toward another prize on the leaderboard.Cheaper Routes and Friendlier HoursThe Beast will award OSS XL seats throughout September, including $1,050 and $2,650 tickets. Those seats can put players directly into the two largest Main Events without paying the full buy-in out of pocket.The $6.60 satellites for the $66 Main Event add another inexpensive route, while the $5.50, $33 and $109 Mystery Bounty multi-flights give players several bankroll levels to choose from. More US-friendly starting times should also make it easier to find an event that fits the day rather than rearranging the entire day around one tournament.Go XL This SeptemberOSS XL begins Sunday, September 6, and runs through Tuesday, September 29. With 336 events and more than $50 million guaranteed, the schedule is large enough for players to choose their own version of XL – a $5.50 Mystery Bounty flight, a $25,000 Nosebleed or something comfortably between the two.Check the full schedule, choose a starting flight and play on ACR Poker. The series is oversized on purpose. The only remaining decision is where to take your seat.