888poker’s XL Autumn Series begins September 20, 2026 and runs through September 29. Compared with last year’s edition it is noticeably smaller, and it puts more of its schedule into a single format. Reading the two schedules side by side says a good deal about how a mid sized operator manages guarantee risk.
The 2026 schedule
According to PokerNews’ preview of the series, the 2026 XL Autumn Series has:
- 41 numbered events over ten days, from September 20 to 29
- Almost $900,000 in guarantees, including $350,000 across a pair of mystery bounty Main Events
- 26 of the 41 events as mystery bounties, which is more than half of the schedule
- Buy-ins from $5.50 to $1,050
The two Main Events are both mystery bounty tournaments with multiple Day 1 flights, some of them starting from September 13:
| Event | Buy-in | Guarantee | Entries needed |
|---|---|---|---|
| Mystery Main Event | $250 | $300,000 | about 1,300 |
| Mystery Mini Main Event | $25 | $50,000 | about 2,220 |
The series opens on September 20 at 6 p.m. BST with a $109 Mystery Opening Event carrying a $100,000 guarantee.
How it compares with last year
The clearest way to see the change is to place it beside the 2025 edition. As Pokerfuse reported, that series ran September 21 to 30, 2025 with $1.5 million in guarantees.
| 2025 | 2026 | |
|---|---|---|
| Numbered events | 56 | 41 |
| Total guarantees | $1.5 million | almost $900,000 |
| $250 Main Event guarantee | $500,000 | $300,000 |
| $25 Mini Main guarantee | $100,000 | $50,000 |
Total guarantees are down roughly 40 percent, the number of numbered events is down by 15, the Main Event guarantee has been cut by 40 percent and the Mini Main guarantee has been halved. Poker Industry PRO headlined its own report on the schedule as a return to a “compact” XL Autumn schedule, which is a fair description.
Last year’s results give a useful yardstick for the new targets. The 2025 Main Event drew 2,319 entrants, and Romania’s “amormori” won $55,782. The Mini Main was won by “brocanuts” for $6,077 from a field of 4,413. A Main Event guarantee that needs about 1,300 entries is a much lower bar than a field that drew over 2,300 a year earlier.
What a guarantee actually costs an operator
A guaranteed tournament is a promise: if entries fall short of what the guarantee requires, the operator pays the difference, which players call an overlay. That makes every guarantee a small bet on turnout. A large series multiplies that bet across dozens of events, and each one has to be sized against how many players the site can realistically deliver.
That is the logic behind a smaller schedule. Cutting the total by about 40 percent and the Main Event by the same proportion reduces the size of the potential overlay, while still leaving a headline event with a six figure guarantee. This is our interpretation of the schedule, not a stated rationale from 888poker, but the numbers point one way.
The warm up event that shows the pressure
A recent result illustrates why the operator would want to be careful. On September 14, Canada’s “MrYoungShark” won the $109 Mystery Bounty Main Event, as PokerNews reported, beating a field of 683 entrants. His total was $15,371, made up of $6,536 in prize money and $8,835 in bounties, and Lithuania’s “MantynisNA” took second for $6,027.
The interesting note is the field size. PokerNews described 683 entries as one of the lowest turnouts for that tournament since 888poker reduced the guarantee from $100,000 to $80,000. Using our own arithmetic, if about $100 of each $109 buy-in goes into the prize pool, 683 entries would produce a pool of roughly $68,000, so the event would have fallen around $12,000 short of an $80,000 guarantee. That is an approximation, but it shows how quickly a soft field turns a guarantee into a cost.
The BLAST cashback promotion
888poker is also running a rotating cashback offer on its BLAST games, and Pokerfuse reported it as extended for another week, from September 17 to 23. The cashback rises with the total fees a player pays during the week:
| Total fees paid | Cashback |
|---|---|
| $5 to $49 | 10% |
| $50 to $399 | 20% |
| $400 or more | 50% |
The offer applies to BLAST games at all buy-in levels, and Pokerfuse points out that BLAST is one of the most volatile forms of poker, which makes a cashback that scales with volume especially attractive to high volume players during a downswing. It is also a tool for keeping volume on the site between series.
The wider 888 picture
The XL series is only one part of 888poker’s business. The company’s software also powers the WSOP’s US online poker under an agreement that expires this year, which we examine in our piece on who powers WSOP Online. A smaller, more carefully sized XL series and an uncertain contract in the US are two different stories, but together they show an operator that is managing its exposure on more than one front.
What to watch
The most informative number will be the Main Event field. If the $300,000 guarantee is cleared comfortably, the reduction will look like disciplined sizing. If it is a close call, it will suggest that even the lower target is a stretch in the current market. The result will be a useful signal for how much tournament liquidity 888poker’s network can currently deliver.