Betting is an inexact science. Even the smartest bettors aren’t going to win more than 55-60% of their bets, and they know it. That’s one reason they stay away from wagers that don’t represent good value. They know enough to understand it usually isn’t worth it.
But sharps aren’t infallible. They’re human, and they make mistakes too. One of the most memorable came in Super Bowl XLVIII, when the Denver Broncos faced the Seattle Seahawks. After the previous two Super Bowls featured a safety, recency bias pushed the public toward the “Yes” bet on a safety occurring in the game.
By kickoff, the “No” bet, which usually sits at -1000 or worse, was available at -500 or better.
Sharps jumped all over it, then watched in disbelief as Denver sent the opening snap over Peyton Manning’s head. Overconfidence hit hard, and what looked like a near certainty backfired immediately.
Betting like a sharp can be profitable, but it’s just as important to avoid their mistakes. Here are some of the biggest ones.
Chasing Losses
On the night of the Denver safety fiasco, some sharp bettors made their money back with other wagers. Others shut it down and accepted the loss. And some chased it, only to dig a deeper hole.
Losses are inevitable, but how you respond to them matters. Emotional betting is rarely profitable in either the short term or the long term. Stick to plays you already liked, don’t force action, and never increase your stake simply because your last bet lost.
Overconfidence
Most sharp bettors rely on a system or spend hours researching before placing a wager. When that work pays off consistently, it’s easy to believe you know more than the market or the average bettor.
But once the game starts, anything can happen. When Purdue faced Fairleigh Dickinson in the 2023 NCAA tournament, the Knights were listed around +2500 to win, while Purdue sat near -10000. A $1000 bet on the Boilermakers would have returned just $10.
Those bets often cash. This one didn’t. Fairleigh Dickinson pulled the upset, and anyone laying the price was burned. There is no such thing as a sure bet, and no system is immune to randomness.
Failing to Line Shop
Some sharps can’t line shop because they’ve been limited at certain sportsbooks. When you can shop, though, it’s critical to do so. Small differences add up over time.
If you win 20 bets at $100 each at +110, you’ve made $2200. At +115, that’s an extra $100. Skipping line shopping is the same as leaving money on the table.
Promotions matter too. You might see a play listed at +100 on one book and +115 on another. If the lower price comes with a 25% odds boost, it can still be the better payout. Always check before locking anything in.
Betting Without Researching
Even sharp bettors occasionally break their own rules and place bets based on feel or emotion. While that can work once in a while, it’s not a sustainable approach.
Sharps build systems for a reason. When they ignore them, it’s usually because of information the model can’t capture, such as weather or a late injury.
Placing too many bets often means you aren’t doing the necessary work. And when the research stops, the losses usually start soon after.
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