For sports bettors, the vig is more expensive than the spreads on a typical Wall Street stock trade. But the growth of online betting—mostly illegal in the U.S.—has started to shrink the vig below 10% in some places, which should eventually make betting a better deal for bettors. That’s what you’d expect, says Toby Moskowitz, a professor of finance at the Yale School of Management and one of the principals with the $226 billion hedge fund manager AQR Capital Management.
Transaction costs might shrink, Moskowitz says, if online betting volumes rise and bookmakers increasingly compete. A company dedicated to that proposition is London-listed Paddy Power Betfair (ticker: PPB.UK), whose websites, like Paddy Power and Betfair, processed over $15 billion in sports wagers in 2017. Since we are a stock market publication, we should note that at 8,435 pence ($111.59) a share, Paddy Power Betfair goes for over 20-times this year’s earnings estimate and 14-times cash flow. Revenue grew 13% in 2017, with about half of its revenue from online betting in Britain and Ireland, and about 20% from Australia and on-the-ground casinos. The U.S. is just 6% of revenue, but is growing fast.
If you bet in a profitable manner and have just a tad bit of luck, it is likely that after a few months’ time you will have built up a very substantial bankroll and probably enough profits to be able to use a decent chunk of them on your own expenses and needs. It is at this point that you can say you have won, when your bankroll is healthy and there is plenty of money left over to withdraw and spend on yourself.
Throughout January and into the middle of March, as football winds down, there are thousands of betting opportunities each and every week. With around 100 NBA and NHL games and over 300 college games per week, there’s a minimum of 1,200 spread, moneyline, and over/under bets to make. That does not include any of the props! The action is ongoing and smart sports bettors take advantage of it as they prep for March Madness and the start of the MLB season.
The 2nd concern is 57% winning rate. Is it something everybody can achieve? The video assumes we get 100% winning amount of our original bet amount when we win (namely 2.0 decimal odds). However, that’s the return we can expect under the magic break-even rate of 52.4%, therefore we have to achieve nearly 9% better (57% / 52.4) winning rate than the probability of outcome the actual odds at bookmaker suggests.

Each better must know his limits and choose the sport, competition and region accordingly. Information is vital – the more you know about the sport, the better for you. The information sources are the Internet, watching TV, participation on the matches etc. Betting according to the actual ranking such as "the third team plays the one but last team" is certainly insufficient.
A rules violation can have an impact on wagering results. Recall when the USGA made a ‘big bogey’ according to USGA CEO Mike Davis when it penalized Dustin Johnson one stroke during the 2016 U.S. Open on a murky new rule that was revised to help players who were grounding their putters while addressing the ball. The USGA’s delayed enforcement created a fiasco.
On our Picks page, you’ll notice dollar signs, ATS, To Win and Total O/U. These are all betting terms that you should familiarize yourself with in order to make strategic picks. Under the Last 100 heading, you’ll see the records for the last 100 games played in the Premier League. The table also features the amount of money won (or lost) based on the opening and closing lines, ATS and Total O/U. It may seem like gibberish but don’t worry, we’ll explain each term below.  
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