Jay Cohen’s Prison Sentence Sparked Modern Sports Betting

From Trial Futures to Antigua Startup

In the early 1990s, Jay Cohen worked as a trader on the Pacific Options Exchange in San Francisco. He and a colleague quickly created a market for O.J. Simpson trial outcomes, using a futures‑style betting system that fluctuated with news. This experience inspired Cohen to launch an online betting exchange for sports, eventually forming the World Sports Exchange (WSEX) in Antigua. The island nation’s legal framework for sports wagering attracted Cohen and two partners, who built a primitive website offering typical Vegas bets plus in‑game futures that could be traded while matches were underway. Their model predated today’s prediction platforms like Polymarket and Kalshi, introducing live‑trading contracts for sporting events.

Legal Assault and a Hostile Judge

After a few media mentions, WSEX’s daily volume soared to millions of dollars annually, dwarfing the combined market of Las Vegas and Atlantic City. U.S. lawmakers, especially Sen. Jon Kyl (R‑Ariz.), grew uneasy about offshore gambling. Meanwhile, the NFL, NBA, NHL, and MLB funneled pressure through a New York law firm linked to prosecutors in the Southern District of New York. Cohen and his partners faced wire‑fraud indictments despite operating legally under Antiguan rules and serving no U.S. customers directly. Returning to the United States to fight the charges, Cohen was quickly arrested, only to be assigned Judge Thomas Griesa, who demonstrated little grasp of internet technology and a strong bias against gambling. Griesa repeatedly overruled defenses, ultimately directing a guilty verdict; jurors later claimed they believed Cohen was innocent but were forced to convict.

The Rise, Fall, and Exile of WSEX

Cohen’s conviction led to a 21‑month prison term, a sentence upheld after appeals and even a Supreme Court petition. While incarcerated, WSEX’s competitors emerged with deeper pockets, and by the early 2000s the platform began losing market share. The business collapsed a few years later, prompting Cohen to relocate to Montenegro. Fearing continued U.S. prosecution, he renounced his American citizenship and now lives in a small apartment, broke and barred from reentering the U.S. because wire fraud is deemed a crime of moral turpitude. His attempts to visit his ailing father have been blocked by the government.

Legacy and Current Impact

Today sports betting is legal across many states, with stadiums even housing sportsbooks, and in‑game wagering is a staple at FanDuel, DraftKings, and countless other operators. Cohen’s innovations—live futures and tradable game outcomes—have become industry standards. His 384‑page book, Odds Man Out, priced at $32, frames the saga as a cautionary tale about overreach by government and powerful corporate interests. While debates rage over addiction and financialization, prediction markets also provide a clean venue for hedging risk, a development rooted in Cohen’s early work. He served nearly two years behind bars to make that possible, a fact that underscores the volatile intersection of law, technology, and sport.