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 on-line squabble peaked when Voulgaris known as the previous DraftKings president “retarded.”
The dialogue started after one Massachusetts consumer shared a observe from Fanatics. He was knowledgeable that his betting limits had been diminished over considerations about “potential arbitrage positions.”
In Massachusetts they now must let you know for those who’re restricted and why. Got my first one as we speak.
Such a bizarre option to say “you were profitable so we didn’t want your action” pic.twitter.com/XfvbhJsdjA
— John Hyslop (@sloprules) June 1, 2026
‘Advantage Gambling’
Kalish stated limiting bettors’ motion was a part of making an attempt to stay a worthwhile enterprise. He famous that eradicating or limiting some gamers who’re successful or participating in arbitrage – putting wagers on all potential outcomes – was essential to stay financially viable.
“General framework in gambling industry is always ‘gambling games have by design a house edge’ so anything systematically removing it and detected, e.g. card counting in [blackjack] or arb or whatever = you’re going to get limited or banned in gambling industry,” Kalish posted.
Voulgaris countered that sports activities bettors aren’t dishonest or participating in something apart from utilizing their very own talents to win.
“I don’t think you understand what ‘advantage gambling’ actually means,” he posted. “You can’t lump card counting, edge sorting, shuffle monitoring, or exploiting correlated parlays along with somebody betting straight sports activities wagers.
“We’re not talking about customers abusing broken same-game parlays or obvious book errors. We’re talking about people who bet normal sides and totals, win, and then get shown the door because the book is either too dumb or too greedy to figure out how to properly book high-limit VIPs while separating them from high-limit sharps.”
Okay I apologize. I didn’t notice you had been retarded.
— Haralabos Voulgaris (@haralabob) June 2, 2026
Destined To Lose
During the dispute, Kalish defended the strikes by arguing that sportsbooks should have a home edge. Sharp bettors take away that and might have an effect on profitability, he stated. Kalish’s argument for limiting is that playing implies a home edge. But skilled sports activities bettors take away that edge. Consequently, Kalish believes in limiting these gamblers.
“It’s not complicated, this is just a specific audience,” he wrote. “It’s in the gambling industry, 100% of gambling games have a house edge. Every gambling operator globally will ban/limit/trespass you if doing anything to systematically remove house edge – no different from card counting, edge sorting.”
Voulgaris responded that the operator truly units the road and is already developing a home edge in betting markets. He added that dropping gamers fund your complete trade. 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 intentionally set lines that systematically remove their own edge?” he requested. “Because if so, that sounds like a sportsbook problem. You’d be better off just embracing your actual role: a parasitic goblin whose job is to extract maximum value from customers, even if it destroys their lives, while simultaneously banning anyone with the slightest chance of showing a profit.”
Voulgaris later additionally pointed to a few of DraftKings’ latest monetary losses as an indication that removing successful bettors could also be higher for enterprise.
An neglected side of the @mattkalish vs Prediction Market debate:
Its Hard to actually drag a man too exhausting who’s simply doing all the things he can to guard his baggage.
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
“Can you imagine what their numbers would look like if they couldn’t ban anyone *quasi* competent and couldn’t juice growth by marketing gambling addiction as a lifestyle choice to the youth of America?” Voulgaris posted.
First Of Its Kind Regulation
The Massachusetts Gaming Commission accepted 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 manner.
Operators should tailor every discover to the person bettor. Thus, sportsbooks can’t give the identical motive to each buyer. Regulators hailed the transfer as a option to higher serve sports activities betting prospects within the state.
“We are the first jurisdiction to take up this issue,” MGC Chairman Jordan Maynard stated when the proposal was first thought of. “This was not an easy topic to take on, but it’s a good thing for the citizens and patrons of the commonwealth.”
Voulgaris Touts Prediction Markets
Voulgaris spent a lot of his life wagering on the NBA and made tens of millions from the trade. He additionally labored for 3 years because the director of quantitative analysis and improvement for the Dallas Mavericks.
At the poker desk, the 50-year-old Canadian has $5.5 million in winnings and made common appearances on High Stakes Poker. An early adopter of bitcoin, he parlayed a few of these winnings into buying the Spanish soccer membership CD Castellón in 2022.
Beyond his criticism of sportsbooks limiting motion, Voulgaris identified that prediction markets are a fairer manner of permitting everybody to wager on markets. These might be nice choices for restricted bettors, Voulgaris stated.
“I do appreciate you pointing out the hypocrisy of ‘prediction markets’ being anything other than gambling, but at the very least these prediction markets have come up with a platform that allows sharps to place a bet without getting banned,” he stated.
Prediction markets function as peer-to-peer platforms permitting customers to commerce shares on outcomes of various occasions. There is not any sportsbook setting traces. There are solely counterparties prepared to take the opposite aspect of the contract. As a end result, merchants can promote their place earlier than the result is set.
By comparability, sportsbooks use a house-controlled mannequin the place bettors wager straight towards the bookmaker. Bettors can’t commerce their positions on the result of a sport.
