DraftKings quietly launched a new product in Oregon called DK Replay on March 25, 2026, and an analysis by Gaming America published April 4 found the average vigorish on the product is 10.15%, more than double the standard sports betting market and comparable to, or higher than, the house edge on slot machines at most Las Vegas casinos.
What DraftKings DK Replay Is and How It Works
DK Replay draws from a library of hundreds of thousands of historical MLB plate appearances. When a player opens the product, they see an anonymized pitcher-batter matchup: no names, no team logos, only performance ratings (bronze, silver, or gold) based on real career stats. A 15-second pitch clock starts immediately. The player must bet before it expires.
The wager is on the outcome of the next pitch: a ball, a strike, or a ball in play. The historical result is revealed instantly. After the complete plate appearance plays out, the real identities of the pitcher and batter are revealed. The product runs at roughly 240 rounds per hour, a pace closer to slot machine velocity than to traditional sports wagering.
DraftKings prices each outcome based on historical frequencies for that class of pitcher and batter, not the specific pitch that was already thrown, and takes its margin from the gap between the offered odds and the true probability.
DraftKings DK Replay Carries a 10.15% House Edge
Gaming America tested 20 consecutive bets on the product and calculated an average vigorish of 10.15%. A standard two-sided sports betting market at -110/-110 carries a vig of 4.76%. The 10.15% figure puts DK Replay in the same range as casino games that the company markets separately on its app. Slot machines on the Las Vegas Strip typically carry a house edge of around 8%, meaning the DK Replay margin is higher than the industry average for slots.
DraftKings Runs a Casino and Sportsbook Under One App
DraftKings is one of a growing number of online casinos that also offer sports betting in regulated US states, operating both products through the same app. A player can move between a slot machine, a blackjack table, and a sports bet without switching platforms.
Most operators in that category keep the two products clearly separated, with different margin structures for each. A standard sports bet carries a vig of around 4-5%. A slot machine carries a house edge of 6-10%. DK Replay is available through the sportsbook interface but carries a 10.15% margin, putting it at the top end of what most casino games charge.
Why Oregon Is the Only State Where It Launched
DraftKings has been Oregon's sole authorized online sportsbook since January 2022, operating in partnership with the Oregon Lottery. No competing sportsbook operates in the state with a lobbying interest in contesting the product's classification. The regulatory setup gave DraftKings room to test a product whose classification elsewhere would face more scrutiny.
Historical-result products occupy a grey area in several state regulatory frameworks. Historical horse racing machines, which work on a similar premise, have faced classification challenges in multiple jurisdictions. DK Replay is not the first fast-paced betting format to face this kind of scrutiny. DraftKings and other major sportsbooks are already defendants in a microbetting addiction lawsuit working through US courts.
What the Product Classification Means for Players
No regulatory body in Oregon has publicly commented on DK Replay's classification since its March 25 launch. The Oregon Lottery operates the state's sports betting infrastructure through its partnership with DraftKings, which adds a layer of complexity to any future regulatory review.
For players, the practical question is what the product actually costs to use. At 240 rounds per hour and a 10.15% margin per round, the theoretical loss rate is materially higher than a player would face on most other products available through the same app. A player depositing $50 and betting $1 per round at that pace would, in theory, cycle through their stake in a different timeframe than they would on a standard sports bet.
DraftKings has not issued a public statement addressing the house edge figures reported by Gaming America. Whether Oregon regulators or other states choose to act on the product's classification remains the key question heading into the second half of 2026.
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