Last Updated on July 19, 2026 by Maurya
Sports betting is one of the oldest pastimes in human civilization and, at the same time, one of the fastest-growing entertainment industries of the modern era. In the United States alone, legal sports wagering has exploded from a single-state monopoly into a multi-billion-dollar market operating in more than three dozen states in less than a decade. Yet most newcomers know surprisingly little about where the practice came from—or how to get started the right way.
The Ancient Origins of Sports Betting
Wagering on athletic competition is nearly as old as athletic competition itself. Historians have documented betting activity surrounding the ancient Olympic Games in Greece as far back as the 8th century BCE, where spectators staked money, goods, and even livestock on the outcomes of footraces, wrestling matches, and pankration bouts. The Greeks viewed these contests as tests of honor and divine favor, and betting added a personal stake to the spectacle.
The Romans took things considerably further. Chariot racing at the Circus Maximus drew crowds estimated at 150,000 or more, and betting was woven into the culture of the event. Gladiatorial contests attracted similar wagering activity. Notably, Rome also gives us one of history’s first examples of gambling regulation: while most gambling was officially restricted, betting on chariot races and certain athletic contests was tolerated—an early recognition that sports wagering occupied a special cultural category.
Across the ancient world, similar patterns emerged independently. Records from ancient China describe wagering on animal fights and physical contests, while cockfighting and its associated betting culture spread throughout Asia and later into Europe. The impulse to predict, compete, and risk something on the outcome appears to be a genuinely universal human trait.
The Birth of Modern Bookmaking: 16th–19th Century England
If ancient civilizations invented sports betting, England industrialized it. Horse racing became known as the “Sport of Kings” during the reigns of the Tudor and Stuart monarchs, and by the 1500s, match races between nobles’ horses routinely carried enormous private wagers.
The true turning point came in the late 18th and early 19th centuries with the emergence of the professional bookmaker. Rather than two parties betting against each other directly, a bookmaker would accept wagers from many bettors on all sides of an event, setting odds designed to guarantee a profit margin regardless of the outcome. Harry Ogden, who operated at Newmarket Heath in the 1790s, is widely credited as one of the first to offer different odds on each horse in a race—a foundational innovation that underpins every sportsbook operating today.
The 19th century brought both expansion and backlash. The UK’s Gaming Act of 1845 and Betting Act of 1853 attempted to curb betting shops, pushing much of the activity underground or to the racetracks themselves. It wasn’t until the Betting and Gaming Act of 1960 that licensed betting shops became legal in Britain, creating the regulated high-street bookmaking industry that still thrives there.
Sports Betting in America: Prohibition, Scandal, and Las Vegas
Sports betting arrived in America with its earliest colonists, and horse racing tracks were among the young nation’s first entertainment venues. Baseball’s rise in the late 1800s created a massive informal betting market—one that would soon produce the sport’s darkest chapter.
The 1919 Black Sox scandal, in which eight Chicago White Sox players were accused of conspiring with gamblers to throw the World Series, fundamentally reshaped American attitudes toward sports betting. Professional leagues distanced themselves from gambling for decades afterward, and the association between betting and corruption drove waves of prohibition.
Nevada broke from the pack in 1931, legalizing most forms of gambling during the Great Depression, and legalized sportsbook operations followed in 1949. For most of the 20th century, Las Vegas stood as the only place in America where a citizen could legally bet on a football game. The federal government reinforced this status quo with the Professional and Amateur Sports Protection Act (PASPA) of 1992, which effectively banned sports betting nationwide while grandfathering in Nevada’s existing industry.
Meanwhile, illegal betting flourished. Estimates before 2018 suggested Americans wagered hundreds of billions of dollars annually through offshore websites and local bookies—demand that prohibition never came close to eliminating.
The Digital Revolution and the Fall of PASPA
Two developments transformed sports betting into the industry we know today.
The first was the internet. Beginning in the mid-1990s, offshore sportsbooks based in jurisdictions like Antigua and Costa Rica began accepting online wagers from customers worldwide. Betting exchanges such as Betfair, launched in 2000, allowed bettors to wager directly against one another. Live, in-play betting—wagering on games as they unfold—became technologically possible and enormously popular.
The second was legal. In Murphy v. NCAA (May 2018), the U.S. Supreme Court struck down PASPA as unconstitutional, ruling that the federal government could not commandeer states into prohibiting sports wagering. The decision returned the question to individual states, and the response was immediate. New Jersey, which brought the case, launched legal betting within weeks. Today, the large majority of U.S. states offer some form of legal sports betting, most of it conducted through licensed mobile apps, and the American Gaming Association reports annual legal wagering handle well into the hundreds of billions of dollars.
Sports leagues that once fought gambling now partner with sportsbooks. Odds appear on broadcast graphics. Stadiums host betting lounges. In historical terms, the speed of this cultural reversal is astonishing.
How to Start Sports Betting Today: A Step-by-Step Guide
Understanding the history makes one thing clear: regulation exists because unregulated betting caused real harm. Starting the right way means starting legally, deliberately, and within your means. Here is a practical framework used by experienced bettors.
Step 1: Confirm That Betting Is Legal Where You Live
Sports betting laws vary dramatically by state and country, and they change frequently. Check your state’s gaming commission website or a reputable industry tracker to confirm that online or retail sports betting is legal in your jurisdiction and that you meet the minimum age requirement (21 in most U.S. states, 18 in some markets). Never use unlicensed offshore sites; they offer no consumer protections, and recovering funds from them can be impossible.
Step 2: Choose a Licensed Sportsbook
Select an operator licensed by your state’s regulator. Established brands compete hard for new customers, so compare them on the factors that actually matter: licensing status, ease of deposits and withdrawals, quality of the app, competitiveness of the odds, and the fairness of any welcome promotions. Read the terms attached to sign-up bonuses carefully—”bonus bets” and deposit matches almost always carry playthrough requirements.
Step 3: Set a Bankroll Before You Bet a Dollar
This is the single most important habit in all of sports betting. Decide on a fixed amount of money you can afford to lose entirely—your bankroll—and treat it as the total cost of your entertainment. A common guideline among disciplined bettors is to risk only 1–5% of your bankroll on any single wager. This approach keeps a bad weekend from becoming a financial problem and gives you enough staying power to learn.
Step 4: Learn the Core Bet Types and How Odds Work
Master the basics before exploring exotic wagers. A moneyline bet simply picks the winner of a game. A point spread bet handicaps the favorite by a set number of points to even the matchup. A totals (over/under) bet predicts whether the combined score will exceed a set number. American odds express payouts relative to $100: odds of -110 mean you must risk $110 to win $100, while +150 means a $100 bet returns $150 in profit. That built-in margin—the “vig” or “juice”—is the modern descendant of Harry Ogden’s 18th-century innovation, and it is why the sportsbook always holds a mathematical edge.
Step 5: Start Small, Track Everything, and Specialize
Place small wagers on sports you already understand deeply. Keep a simple record of every bet: the stake, the odds, the reasoning, and the result. Tracking forces honesty—most casual bettors dramatically overestimate their success. Over time, many successful bettors specialize in a narrow niche (one league, one bet type) where their knowledge can genuinely compete with the market.
Step 6: Shop for the Best Line
Different sportsbooks post slightly different odds on the same game. Holding accounts at two or three licensed books and comparing prices before betting—known as line shopping—is the easiest legitimate edge available to a recreational bettor. Over hundreds of bets, half a point here and slightly better odds there compound meaningfully.
Responsible Betting
The entire history of sports betting regulation is, in essence, a history of societies learning to manage its risks. Respect that lesson. Bet only money designated for entertainment, never chase losses by increasing stakes, never borrow to bet, and never wager under emotional or financial stress. Every licensed U.S. sportsbook offers deposit limits, time-outs, and self-exclusion tools—use them proactively, not reactively.
If betting ever stops feeling like entertainment, free and confidential help is available through the National Council on Problem Gambling helpline at 1-800-GAMBLER, available 24/7 in the United States.
FAQs
When did sports betting become legal in the U.S.? Nevada legalized sportsbooks in 1949, but nationwide expansion only became possible after the Supreme Court overturned PASPA in May 2018, allowing each state to decide for itself.
What was the first sport people bet on? Documented wagering dates back at least to the ancient Greek Olympics and Roman chariot racing, making footraces, combat sports, and horse/chariot racing the earliest bet-upon events in recorded history.
How much money do I need to start sports betting? There is no required minimum beyond your sportsbook’s smallest stake, often $1. What matters is that your total bankroll is money you can genuinely afford to lose.
Is sports betting profitable? For the vast majority of bettors, no—the bookmaker’s built-in margin ensures most players lose over time. Treat betting as paid entertainment, not an income strategy.
Final Thoughts
From olive-wreathed athletes in ancient Olympia to odds updating in real time on your phone, sports betting has evolved alongside civilization itself for nearly three thousand years. The tools have changed beyond recognition; the human impulse has not. What has improved—dramatically—is the framework of legal protection surrounding the modern bettor. Start with a licensed operator, a fixed bankroll, a firm grasp of the odds, and the discipline to keep it fun. That is how you honor the long history of this pastime while writing a smart first chapter of your own.
