Betting on sports ‘futures’ is an enjoyable and potentially profitable way to wager, but there are several potential risks that can lead to losses. Here’s a rundown of things to avoid:

Search for the best price: A common mistake is to assume that the price on a specific futures wager position will be the same at every sportsbook. Nothing could be further from the truth. In fact, you’ll often see a greater degree of difference between futures prices from book to book than any other form of bet. This is because that books aren’t as worried about what price other outfits are offering as they are about keeping their own financial position balanced.

In a competitive field, don’t obsess with picking the winner: This may sound like a strange concept, but once you understand the theory behind it it makes perfect sense. In a large field–the NCAA basketball tournament is a perfect example–the top few favorites are invariably priced at odds that are less than the ‘true odds’ of them winning. On the other hand, there are always teams that fly ‘under the radar’ available at higher prices that present a betting overlay.

To put this in more theoretical terms, the “true odds” of Duke winning the NCAA Championship are almost certainly higher than the price we’re getting. Obviously, determining the “true odds”, or actual probability of a future event is an inexact science but think of it this way: if the NCAA tournament was played 100 times would Duke wind up winning 50 of those? Given the number of other good teams and the propensity for upsets along the way, its doubtful. For the sake of argument, lets say that Duke has a 33% chance to win the tournament. That means that I wouldn’t consider a bet on Duke to be a good value unless I was getting a price that a) accurately reflected the true probability of their winning and b) gave me some compensation for assuming the “risk of the unknown” inherent in taking the position so far in advance. At +500 I might be interested, but at +200 the value just isn’t there.

Note that the more competitive the market, the more difficult it is to find good value on the favorites. Since you can make a case for quite a few teams to win the NCAA tournament at this point this particular futures market is clearly a very competitive one. In a less competitive marketplace it might be possible to “pick the winner” and have it be a good value though you will pay a price for this. Here’s a (thankfully) hypothetical example: let’s say the UFC decided to hold a one night round robin tournament with 5 competitors. Competitor #1 would be heavyweight champion Brock Lesnar. The other four competitors would be professional figure skaters Elvis Stojko, Rudy Gallindo, Brian Boitano and Evgeni Plushinko. Even if he didn’t bring his “A game”, Lesnar would be essentially have a 100% certainty of beating the four untrained fighters, who also happen to be rather effeminate. If a sportsbook installed Lesnar as a -1000 favorite a bet on the 63 265 pound takedown would still be theoretically a good value. It’s always difficult to risk so much to win a little, but from a strictly theoretical standpoint its a good play.

Don’t try to make a huge profit with little risk: Sports betting provides few opportunities to make a ‘big killing’. It may happen occasionally, but even the big payouts when it occurs doesn’t make chasing big longshots a good value. If you’re serious about sports betting it is crucial to maintain your focus on the underlying numbers and look for value at all times. If you want to take a longshot at a huge jackpot, play the lottery but don’t try to do it at a sportsbook.

Wagering value is just as important at the bottom of the barrel as it is at the top. Just because you’re getting a huge potential payback on a big dog doesn’t make it a good value. Make sure that the payback you’re getting presents an overlay situation–even on a huge underdog.

Don’t bet one sided props: Sometimes sports books will offer silly bets just to get publicity or in some cases just to be funny. While there may be life on other planets, the ‘true odds’ of a Martian being named to President Obama’s cabinet wouldn’t justify a +5000 line that it would occur.

Ross Everett is a freelance sports writer and respected authority on sports betting odds comparison. He writing has appeared on a variety of sports sites including sports news and betting odds portal sites. He lives in Las Vegas with three Jack Russell Terriers and an emu. He is currently working on an autobiography of former interior secretary James Watt.