I am not gambling in the race sports but one of my friends gamble in race sports and he told me that it's difficult to collect the information about each team or player if we don't know where we need to go. but the chance of winning is wide open because as long as we can collect valid information from many sources, we can win the bet and make a big money especially if we are sure with the prediction. but yes, he has a bad experience in the race sports because, at that time, he missed something that is important and makes he lost.
i dont think its difficult . nowadays all imposible things can now turned into possible with the help of internet and of course the google . you can just simply google thier names and voila you can scout any informations available on the first pages of the search results . you can then analyze and compare it with any other teams or players to see if which of them has the potential to win every game . though i think all of those methods that i mentioned above is still useless because i know that gambling is a shady business , they can just cook the game so that you cant win easily .
I have a friend that visits the dog/horse races a lot, maybe I'll start going more so I can learn more about it though. 
