Bob,
Simon had a decent explanation in earlier post this year........
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Pinnacle Pulse
The inside line from PinnacleSports.com by Simon Noble
In our last few articles, we have talked quite a bit about "sharp? money. A sharp or professional player is one we expect will win in the long-term. How can we tell if any given player will be a consistent winner going forward? The most accurate way we have found is to compare the line a player received when they made their bet in relation to our closing line.
If a player consistently beats our closing price at Pinnacle Sports, he is likely to be a long-term winner ? period. Interestingly, we have found that this test is more reflective of a player?s future winning potential than their historical win/loss record with the company.
For example, if our closing price on the Eagles was -3 -104 and a customer played -3 +105 earlier in the week - that was a sharp bet. When a player can anticipate the line movement and does this consistently over a series of 100 bets or more, that player is conclusively sharp and will be up substantially in the long run.
What?s the quickest way to identify a player that needs to adjust their style of betting? One who pays a bad price. If other online sports books offer the Eagles at -3 -120 and a player wagers there instead when a better price was available elsewhere such as -3 -104 at Pinnacle Sports, he is almost certainly not sharp. Even if he has been winning thus far, that player will probably lose over time.
How can you use this information to your advantage? By adopting the process known as "comparison shopping". Not only is it second nature to sharp players, but it is one of the easiest ways for any player to increase their potential winnings by playing at the best available price. This is done by having accounts at multiple sports books so that you no longer remain a captive to the 20-cent line of a single book.
The objective when comparison shopping is to shrink the margins on both sides of any given match-up to around six cents or better wherever possible. This is when you are in a position where you can lay -104 on the favorite at one sports book or take back +100 (even money) at another book on the underdog for example.
Once convinced of the benefits of applying comparison shopping to your own personal betting, it?s worth conducting some Internet research to find a selection of sports books to use. Ideally in addition to your existing bookmaker, you should be looking to hold accounts at one or two reduced juice bookmakers such as Pinnacle Sports together with a couple of recreational books, where you?ll find inflated favorite prices and most likely attractive odds on the underdog.