It definitely cannot be consider as passive income, because when you say passive you will not have to rngage it for too long or you can earn even you are not doing anything, more like you are earning while you are sleeping, which is not a cmbehavior of sports bettimg, without you engaging into the bet then you will mot have the possibility of winning, and of course there's no guaranteed that you will win in a bet all the time so it cannot be also consider as active income, I think wnough with categorising gambling, gambling is a gambling and it cannot be related to income.