Jerry Selbee was a mathematician and materials analyst at Kellogg’s, a man whose methodical mind was always looking for the hidden pattern in things. His brother-in-law couldn’t have put it better when he said that anyone who knows Jerry knows that when he jumps into something, he jumps in 100%. It was this passion for numbers that led him to a small lottery brochure that most people would have simply ignored, setting off a high-stakes financial adventure that would eventually involve his entire family and put him at odds with the state of Michigan. In 2003, Jerry and his wife, Marge, ran a convenience store in the small factory town of Evart, Michigan.
One day, Jerry stumbled upon a new state lottery game called Windfall. While the game usually required players to pick six numbers, Jerry was immediately drawn to a specific set of rules that applied when the jackpot was not won. The structure of the game meant that if the jackpot reached a certain roll-down threshold and no one matched all six numbers, the prize money would be distributed among the winners who had matched five, four, or three numbers. Jerry ran the numbers on paper and realized he had found something new—a way to guarantee a profit.
His plan was simple in theory: he waited for a roll-down week, then bought a massive number of lottery tickets to ensure that he would hold the winning combinations across the lower prize tiers. By waiting for the roll-down, the amount of money in those lower prize pools grew so large that the cost of buying enough tickets to cover the combinations was mathematically outweighed by the guaranteed winnings. Jerry spent years keeping his discovery a secret from everyone except Marge. Their first real test involved buying $3,600 in tickets for a roll-down week when the jackpot was set to pay out.
When the numbers were drawn, the total winnings came to $2,150—a small loss but a successful proof of concept. The theory strengthened on the next attempt, netting $15,700 on an $8,000 investment. It was enough for Jerry to let his wife in on his secret, knowing she had full faith in his ability to solve puzzles. Realizing that buying thousands of tickets alone was time-consuming, the couple brought their children into the fold and formed a betting group called G.
S. Investment Strategies, LLC. They partnered with other trusted players to buy tens of thousands of tickets every time a roll-down week was coming up. At first, the winnings grew steadily, from $40,000 to $80,000, and eventually to $160,000 in a single roll-down week.
The family was making a fortune playing by sheer mathematical probability while also cashing in on 2% retail commissions for tickets cashed at their store. Their winning streak was eventually noticed. In May 2005, the Michigan Lottery shut down Windfall, citing decreasing ticket sales, but by then the damage to the system had already been done. The Selbees relocated their operation to Massachusetts, where a new game called Cash Windfall operated on similar rules—but with a catch.
The jackpot rolled down at $2 million instead of $5 million, and the Selbees had to buy the tickets without the same guaranteed retail commissions. By 2009, their winnings had reached a staggering $5 million in net profit after taxes. It wasn’t until July 2011 that a curious Massachusetts Lottery official, Marge Madras, grew suspicious of the sheer volume of tickets being printed and questioned the Selbees. Days later, a story about their secret “system” was published in the Boston Globe, drawing the attention of national outlets like the Washington Post.
The couple faced public scrutiny, and Jerry was vocal about how the lottery itself had been manipulating the roll-down rules for years—he just played the game as it was designed, even if almost no one else understood it. But the Selbees weren’t finished. They had long been using a lottery machine inside their store, and they saw an opportunity to continue their winnings even while the investigation was ongoing. While Michigan state lottery officials were busy investigating the mysterious pair, Jerry and Marge kept playing for as long as they could.
For Jerry, the entire escapade was not one of corruption or inside information—it was about applying sixth-grade math to a game that was fundamentally broken by design. While the state lottery treated it as a mystery, Jerry treated it as a final test of whether an ordinary person could beat the house with nothing more than observation and arithmetic.