I don't know if you know, but these transmissions have very long delays. Compare the results of the matches and the score on the screen in Twitch. This is unfair at the very beginning. The bookmaker smokes you without soap ...
Oh really? I didn't know that. So if you watch the games in the client you will be ahead to viewers watching from stream? Or is it delayed too and only the people in the audience are watching in real time? Maybe there is chance to exploit it if you have someone watching the matches live and you bet at home talking to them on the phone. I saw something similar happening in tennis betting, where they would bet right before the score was transmitted to the bookmakers.