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<\/figure>\n\n\n\nIn 19th-century England, horse racing was practically the national pastime, and bookmaking became a natural side gig. People started tracking bets with literal books \u2014 ledger-style \u2014 hence the term bookmaker<\/em>. <\/p>\n\n\n\n These early bookies weren\u2019t banned, but the UK Betting Act of 1853<\/a> made it illegal to operate betting houses or public places for betting, especially off-track. So while betting itself wasn\u2019t outlawed, the law pushed most of it into the shadows. Bookies could still take bets, just not in fixed locations like shops or offices. That\u2019s why you had runners, street bookies, and people taking bets from pubs or phone lines instead of storefronts.<\/p>\n\n\n\n In the U.S., it played out differently. By the 1920s, thanks to Prohibition (The Eighteenth Amendment), gambling, together with booze, got swept into the underground. Mobsters saw a golden opportunity. Illegal bookmaking thrived, especially in cities like New York and Chicago. Betting on baseball, boxing, and football became a full-blown underground business. And where there was money, there were problems: raids, arrests, and occasionally, dead bodies.<\/p>\n\n\n\n Meanwhile, in the UK, the Betting and Gaming Act 1960<\/a> legalized off-course betting shops, meaning bookies could finally operate licensed, physical locations where people could walk in and place a bet legally. That\u2019s when household names like William Hill and Ladbrokes opened shopfronts, cleaned up their image, and went mainstream.<\/p>\n\n\n\n As for the odds themselves? Early bookies came up with their own pricing systems. Instead of fair bets, they added a margin to make sure they<\/em> always won in the long run. That\u2019s where the idea of \u201cthe book\u201d comes in \u2014 a balanced set of odds where no matter who wins, the bookmaker profits.<\/p>\n\n\n\n By the time the internet rolled around, bookmaking had already gone global in practice, even if it was still illegal in parts of the U.S. <\/p>\n\n\n\n Today? Bookies wear headsets, not fedoras, but the game underneath hasn\u2019t changed all that much.<\/p>\n\n\n\n A lot of people imagine bookies as shady guys in back alleys whispering odds, but today\u2019s bookmakers are more likely to be data analysts than cigar chompers. Here\u2019s what a bookie really does.<\/p>\n\n\n\n Bookies don\u2019t just toss out random numbers. Setting odds involves analyzing a ton of data \u2014 team stats, player injuries, past performance, and even weather conditions. The goal is to estimate the true probability<\/em> of an outcome and then tweak it slightly to turn a profit.<\/p>\n\n\n\n Let\u2019s say there\u2019s a football game where both teams have a 50\/50 shot. In a fair world, both sides would be offered +100 (or 2.0 in decimal). But a bookie might offer -110 on each side instead. Why?<\/p>\n\n\n\n That built-in margin is called the juice or vig. It\u2019s how bookies get paid. So if two bettors each put down $110 \u2014 one on each side \u2014 the winner gets $210, but the bookie keeps $10 no matter who wins. That\u2019s the business model.<\/p>\n\n\n\n To keep profits coming in, bookies need balanced action. If too much money comes in on one side, they adjust the odds to make the other side more appealing. That\u2019s called shaping the line, and it\u2019s a core part of managing risk.<\/p>\n\n\n\n Bookies aren\u2019t cheering against you \u2014 they\u2019re cheering for even betting on both sides. That way, they can lock in profit from the juice without sweating the outcome. The worst-case scenario for a bookie is everyone winning the same bet, which leaves the book with a massive payout and no cover. A few famous examples can show you how it works.<\/p>\n\n\n\n Even the sharpest bookmakers get blindsided now and then. No amount of line movement can fully protect them from wild underdog wins or players rigging the game from the inside. And sometimes, bookies aren\u2019t all fair and honest if they have a chance to make good money. <\/p>\n\n\n\n Here are some moments that hit the betting world like a punch to the gut and a few that left it scrambling for damage control.<\/p>\n\n\n\n In 2016, Leicester City shocked the Premier League by winning the title after opening the season at 5000-to-1 odds<\/a>. UK bookmakers took a beating and had to pay \u00a325 million<\/a> to bettors who had the guts (or loyalty) to back the Foxes early, with the biggest winnings reported to be a whopping \u00a3100,000. Before the final, William Hill offered to pay 66 percent<\/a> of what bettors would win, and some of them agreed to cash out at least part of their bets. So, the bookmaker saved part of its money. <\/p>\n\n\n\n The history of sports betting has its fair share of dirty laundry. A few lowlights:<\/p>\n\n\n\n Scandals like these shake confidence in the whole system. That\u2019s why today\u2019s sportsbooks invest heavily in data monitoring, flagging suspicious betting patterns before things spiral.<\/p>\n\n\n\n Bookies don\u2019t always walk away winners. Centrebet, an Aussie bookmaker, took a huge hit back in 2001 after accidentally posting odds of 100-1 on a horse that should\u2019ve been closer to even money. Bettors jumped on it fast, and the horse won, costing Centrebet over $1.2 million in a single afternoon. <\/p>\n\n\n\n Then there was World Sports Exchange, one of the early U.S.-facing online sportsbooks. Years of legal pressure, unpaid customer withdrawals, and mounting debt led to its shutdown in 2013. <\/p>\n\n\n\nA few notorious names worth knowing:<\/h4>\n\n\n\n
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<\/figure>\n\n\n\nWhat a bookie actually does (and what they don\u2019t)<\/h2>\n\n\n\n
Setting odds<\/h3>\n\n\n\n
The \u201cJuice\u201d (a.k.a. Vig)<\/h4>\n\n\n\n
So, \u201cbookies want you to lose\u201d is just a myth.<\/h4>\n\n\n\n
Legendary wins, shady deals, and betting scandals<\/h2>\n\n\n\n
An unexpected win of underdogs<\/h3>\n\n\n\n
Scandals and fixes<\/h3>\n\n\n\n
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Bookies on the brink (or outright busted)<\/h3>\n\n\n\n