Make your own odds
Instead of screening the whole market for technical inefficiencies, another way to go about finding value is to take a more fundamental and more focused approach. Pick a niche, go in depth, and make your own odds for the event of your choice. We have already looked at the difficulties of this task at the beginning of the article. It is safe to say that excelling in this exercise is orders of magnitude more difficult to achieve than simply spotting market inefficiencies. Most people do not have the resources, time, and knowledge to make it work. That is why, they would often delegate this task to a third party, which third party is of course getting paid for its service. This third party is what we often call the tipster.
The Tipster
The tipster is a betting expert, who is using his expertise to find value in the markets and is selling this value to his customers in the form of (presumably) profitable bets. There are different subscription models ranging from a fixed monthly fee (WinnerOdds) to a fee per bet (pyckio) all the way down to a performance fee on the achieved betting profit (Mercurius).
How does a tipster service compare to a technical value betting service, such as the one RebelBetting is offering? To answer this question, we need to look in depth at the tipster business model, as well as the variety of offerings on the betting tipster market.
Reliability
Reliability is undoubtedly the biggest issue of most tipster services as compared to technical value betting. RebelBetting's value betting for one is a simple and easy to grasp product. You are getting a feed of prices diverging from the market. You know where the profit is coming from. What you see is what you get. While there are certainly quite a few technical challenges in implementing such a service, the general logic for selecting the bets is very clear.
Not so with tipsters. To identify value in a market using a fundamental approach, you would not only need to implement a variety of tools to accurately calculate the price of an event – you would also need to keep those tools secret from everyone, including your customers. If others become aware of your exact process, you are at risk of being copied and seeing the edge you discovered evaporate before your eyes. Remember the invisible hand? Therefore, as a customer, you never truly know how the tipster selects the bets he is offering.
Monkeys tossing coins
This does not necessarily mean that the bets you are buying from a tipster do not contain value (though most of the time they do not). However, it certainly means that you can hardly even tell if that is the case. Due to the volatile nature of betting returns, a winning past record does not tell you much, even if a tipster loves to use one for marketing reasons. In his article "Monkeys Tossing Coins", Chris from BettingIsCool demonstrated, that 100 simulations of 1000 random bets with negative expected value the size of the Pinnacle margin produced at least 10 records with a return bigger than 1% and the top performer had an ROI of 11.74%.
Remember that the bets which produced this ROI are completely random bets which contain no value whatsoever and in fact contain negative expected value when you factor in the margin. What is more, we are looking at a record of 1000 bets – not exactly the smallest of samples. As we can clearly see from this experiment, the winning record of a tipster rarely gives you any valuable information. And this is even before we factor in the chance that those records are falsified, which unfortunately happens way too often in this industry.
Survivorship bias
Falsifying of records may occur in the most shameless of manners, as in blatantly deleting losing picks from your Twitter feed. But also in more subtle ways. The large majority of tipsters produce negative records. Clearly, after having such a record behind him, a tipster has no motivation to maintain his account anymore. Some platforms give such tipsters the possibility to delete their accounts right away and give it another try with a new account and blank page, hoping that the variance will turn out in their favour this time.
Others diverge the focus away from those losing tipsters in other ways. But they are there and in large numbers. Focusing on winners while ignoring the losers is called the survivorship bias and is prevalent in many areas of life and especially in sports betting. It gives you a distorted picture of the percentage of profitable tipsters, which in most cases is small enough to be attributed to pure chance.
Since you are completely blind to the underlying process and you can't really bet the tipster's winning record (that is if you are confident the record itself has not been distorted), the only guarantee that the bets a tipster is selling you are any better than a monkey throwing darts are your trust in the expertise of the tipster. Well, that and of course the closing line value.