A prediction for gambling based on chance can only be given by a prophet. Can such an "expert" be a prophet? This is unlikely. Forecasts make sense only when the element of chance in the event (game) does not exceed 50%, and the forecast of the result is based on facts and calculations, the weight of which for the outcome of the event is above 50%.
Even the soothsayers may not accurately predict games all the times. If not their visitors would consists mostly of gamblers who are in search of solutions. Generally, the gaming niche is not supposed to reach this length of inviting a prophet to forecast competitions. Wouldn't it cost the player extra money to consult the powers of spiritual eyes?
Even a prophet can not make accurate prediction for a game because prophecy doesn't work like that, if it was real that prophets can actually do that, then we have lot of them all over the world but yet players lose all the time and some people even get addicted. Ignorance is a problem that some people have, they know that gambling is based on luck but yet wants to believe that there something that can make them have a 100% winning all the time.