A social media spat broke out on Monday between DraftKings co-founder Matt Kalish {and professional} sports activities bettor and poker participant Haralabos Voulgaris over a brand new Massachusetts regulation mandating sportsbooks inform sharp bettors why their motion has been restricted.
The web squabble peaked when Voulgaris known as the previous DraftKings president “retarded.”
The dialogue started after one Massachusetts person shared a observe from Fanatics. He was knowledgeable that his betting limits had been lowered over issues about “potential arbitrage positions.”
In Massachusetts they now must let you know should you’re restricted and why. Obtained my first one right now.
Such a bizarre approach to say “you had been worthwhile so we didn’t need your motion” pic.twitter.com/XfvbhJsdjA
— John Hyslop (@sloprules) June 1, 2026
‘Benefit Playing’
Kalish stated limiting bettors’ motion was a part of trying to stay a worthwhile enterprise. He famous that eradicating or limiting some gamers who’re successful or participating in arbitrage – inserting wagers on all attainable outcomes – was obligatory to stay financially viable.
“Common framework in playing business is at all times ‘playing video games have by design a home edge’ so something systematically eradicating it and detected, e.g. card counting in [blackjack] or arb or no matter = you’re going to get restricted or banned in playing business,” Kalish posted.
Voulgaris countered that sports activities bettors aren’t dishonest or participating in something aside from utilizing their very own talents to win.
“I don’t suppose you perceive what ‘benefit playing’ truly means,” he posted. “You possibly can’t lump card counting, edge sorting, shuffle monitoring, or exploiting correlated parlays along with somebody betting straight sports activities wagers.
“We’re not speaking about prospects abusing damaged same-game parlays or apparent e-book errors. We’re speaking about individuals who guess regular sides and totals, win, after which get proven the door as a result of the e-book is both too dumb or too grasping to determine the best way to correctly e-book high-limit VIPs whereas separating them from high-limit sharps.”
Okay I apologize. I didn’t understand you had been retarded.
— Haralabos Voulgaris (@haralabob) June 2, 2026
Destined To Lose
In the course of the dispute, Kalish defended the strikes by arguing that sportsbooks will need to have a home edge. Sharp bettors take away that and may have an effect on profitability, he stated. Kalish’s argument for limiting is that playing implies a home edge. However skilled sports activities bettors take away that edge. Consequently, Kalish believes in limiting these gamblers.
“It’s not sophisticated, that is only a particular viewers,” he wrote. “It’s within the playing business, 100% of playing video games have a home edge. Each playing operator globally will ban/restrict/trespass you if doing something to systematically take away home edge – no completely different from card counting, edge sorting.”
Voulgaris responded that the operator truly units the road and is already establishing a home edge in betting markets. He added that dropping gamers fund all the business. In conventional sports activities betting operations, sportsbooks are the direct beneficiary of these losses. Whereas on a prediction market platform, the sharper counterparty wins the cash.
“Are you saying sportsbooks deliberately set strains that systematically take away their very own edge?” he requested. “As a result of if that’s the case, that appears like a sportsbook downside. You’d be higher off simply embracing your precise position: a parasitic goblin whose job is to extract most worth from prospects, even when it destroys their lives, whereas concurrently banning anybody with the slightest probability of exhibiting a revenue.”
Voulgaris later additionally pointed to a few of DraftKings’ current monetary losses as an indication that removing successful bettors could also be higher for enterprise.
An missed facet of the @mattkalish vs Prediction Market debate:
Its Laborious to actually drag a man too arduous who’s simply doing every thing he can to guard his luggage.
DraftKings has a cumulative web loss (amassed deficit) of roughly $6.4 billion as of early 2026 pic.twitter.com/TsMI6duwaH
— Haralabos Voulgaris (@haralabob) June 3, 2026
“Are you able to think about what their numbers would seem like in the event that they couldn’t ban anybody *quasi* competent and couldn’t juice development by advertising playing habit as a life-style option to the youth of America?” Voulgaris posted.
First Of Its Form Regulation
The Massachusetts Gaming Fee permitted the brand new regulation in December and went into impact on Monday. Now, the state forces operators to tell bettors why their exercise is proscribed in any approach.
Operators should tailor every discover to the person bettor. Thus, sportsbooks can’t give the identical cause to each buyer. Regulators hailed the transfer as a approach to higher serve sports activities betting prospects within the state.
“We’re the primary jurisdiction to take up this problem,” MGC Chairman Jordan Maynard stated when the proposal was first thought of. “This was not a straightforward matter to tackle, however it’s a very good factor for the residents and patrons of the commonwealth.”
Voulgaris Touts Prediction Markets
Voulgaris spent a lot of his life wagering on the NBA and made thousands and thousands from the business. He additionally labored for 3 years because the director of quantitative analysis and growth for the Dallas Mavericks.
On the poker desk, the 50-year-old Canadian has $5.5 million in winnings and made common appearances on Excessive Stakes Poker. An early adopter of bitcoin, he parlayed a few of these winnings into buying the Spanish soccer membership CD Castellón in 2022.
Past his criticism of sportsbooks limiting motion, Voulgaris identified that prediction markets are a fairer approach of permitting everybody to guess on markets. These could be nice choices for restricted bettors, Voulgaris stated.
“I do respect you declaring the hypocrisy of ‘prediction markets’ being something aside from playing, however on the very least these prediction markets have give you a platform that enables sharps to position a guess with out getting banned,” he stated.
Prediction markets function as peer-to-peer platforms permitting customers to commerce shares on outcomes of various occasions. There isn’t a sportsbook setting strains. There are solely counterparties prepared to take the opposite facet of the contract. Consequently, merchants can promote their place earlier than the end result is set.
By comparability, sportsbooks use a house-controlled mannequin the place bettors wager instantly in opposition to the bookmaker. Bettors can’t commerce their positions on the end result of a sport.
