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The Biggest Blackjack Wins of All Time

The biggest blackjack wins of all time didn’t happen by chance. Don Johnson negotiated a 20% loss rebate out of a desperate Atlantic City casino, the MIT team turned card counting into a multimillion-dollar operation, and Kerry Packer walked out of Las Vegas with up to $26 million in a single night.

On this page, I’m breaking down four legendary wins plus two honorable mentions, covering exactly how each one worked and why the casinos eventually shut all of them down.

Don Johnson: The Man Who Beat Atlantic City for $15 Million

Don Johnson didn’t beat three Atlantic City casinos for over $15 million with card counting or advanced strategy. He beat them by negotiating rules that no casino should have accepted.

Some context: Johnson had spent years building computer-assisted wagering systems for horse racing. He understood odds and probabilities at a level most players never reach. When Atlantic City was bleeding high-rollers to online gambling in the early 2010s, he used that desperation to his advantage and negotiated a 20% loss rebate on any session where his losses exceeded $500,000. That one clause flipped the math in his favor.

From late 2010 to early 2011, Johnson hit Caesars, Borgata, and Tropicana in succession, collecting over $15 million total. His biggest single session lasted 12 hours and produced $5.8 million in winnings. The casinos eventually cut him off, even though he never technically cheated. He just got better terms than they should have offered.

The MIT Blackjack Team

The MIT Blackjack Team is probably the most famous card-counting operation in history, and it started with a small group of students in the late 1970s who couldn’t quite agree on how to count cards.

The early years were inconsistent because different members used different counting systems. That changed in 1980 when Bill Kaplan joined the group. Kaplan had already run a successful card-counting operation of his own, so he standardized their methods, brought in outside investors, and turned a loose group of students into something closer to a business. At their peak, the team reportedly had over 70 members working across casinos using a “spotter plus big player” approach that kept suspicion low.

They were eventually caught, as every operation like this eventually is. Their story became famous enough to inspire the book Bringing Down the House and the 2008 film 21. Exact winnings are disputed, but estimates generally put their total take at $10 million or more across their run.

Kerry Packer: The Australian Billionaire Who Moved Markets

Kerry Packer was Australia’s richest man for much of his life, and he gambled like it. He wasn’t a card counter or a rule-bender. He was a wealthy, mathematically sharp player who understood odds and probability well enough to play at a scale that genuinely rattled casino executives.

His most famous night came in 1995, when he reportedly walked out of Las Vegas with somewhere between $20 and $26 million after a single session. Accounts vary on the exact figure, but most sources agree on the rough range. He apparently tipped the dealers $1 million on his way out. In 1991, he visited the Las Vegas Hilton and left with roughly $7 million from a single night of play.

Packer wasn’t banned from casinos the way card counters are, but his bet sizes were large enough that he could move a casino’s quarterly results on his own. That kind of action makes casinos nervous, regardless of how the chips are falling.

Archie Karas: The Greatest Run in Casino History

Archie Karas arrived in Las Vegas in December 1992 with $50 in his pocket. What happened next is one of the most remarkable gambling stories ever told.

He borrowed $10,000 from a friend, tripled it playing Razz poker, and paid back the loan. Then he kept going. He ran through the poker tables, beating some of the biggest names in the game, including Stu Ungar, Chip Reese, and Doyle Brunson. After the poker tables stopped producing, he moved to blackjack, baccarat, and craps. By around 1994, he had reportedly accumulated close to $40 million.

Then he lost it all. Not quickly, but steadily, one million at a time. He rebuilt some of it later, then lost that too. He was eventually arrested for cheating at a separate incident and continued gambling until his death in 2024 at age 73. His run from $50 to $40 million remains one of the most extraordinary winning streaks in casino history, with or without the ending.

Other Notable Big Winners

Two more names belong in this conversation, even if they don’t quite reach the numbers on the main list.

Ken Uston’s $4.5 Million Achievement

Ken Uston was a Yale-educated executive who essentially invented large-scale team card counting in the 1970s and 1980s. He and his crews worked multiple casinos simultaneously and were eventually banned from practically every major casino in the country after pulling in around $4.5 million. His methods directly influenced the MIT team that came after him.

Dana White’s Blackjack Track Record Is Impressive

Dana White, the UFC president, built a reputation as a serious blackjack player before the casinos started pushing back. He reportedly accumulated around $2 million in winnings before major casinos began capping his bets to limit their exposure.

He’s talked about it openly in interviews, and the caps on his action are about as clear a confirmation as you can get that he was doing real damage at the tables.

What the Biggest Blackjack Wins Have in Common

Every player on this list came from a different background, played in a different era, and used a different approach. But a few things connect them all.

None of them played on emotion. Losing ten hands in a row didn’t send them chasing losses with bigger bets. They had a plan and stuck to it, whether that plan was card counting, negotiated rules, or disciplined play with a bankroll large enough to absorb variance.

The other common thread is a financial cushion. Not one of these players was risking money they couldn’t afford to lose. That freedom from desperation is what allows for the kind of patient, strategic play that produces results like these.

Can You Replicate These Wins?

Realistically, no. The casinos are better at identifying and cutting off any player with a real edge than they were in the 1980s or even the 1990s. But there are still lessons to be learned from how these players approached the game.

Learning basic blackjack strategy gets you to around a 0.5% house edge, which is about as low as you’ll find at any table game in a casino. Finding single-deck blackjack tables gives you a better shot than the 6-deck and 8-deck shoes that dominate most floors today. And knowing when to walk away matters more than almost any other decision you’ll make. The players on this list didn’t just know how to win. They knew when to stop, and most of them learned the hard way what happens when you don’t.

The Bottom Line

The biggest blackjack wins of all time share three things: a clear edge, strict discipline, and enough bankroll to survive the swings. Don Johnson’s $15 million run is the most creative example on the list, the MIT team is the most organized, and Archie Karas going from $50 to $40 million is the most dramatic story in casino history.

If you want to try your own run at the tables, start with our blackjack beginners’ guide before you sit down.