I think that when a person bets on a sport that he knows and can demonstrate that his criteria are valid, then it is demonstrated that it is a skill, and that sometimes luck can help him, but luck in sports betting is there but not with the intensity that it has in a casino where things are previously done at random, in casinos with slot machines, with any other type of game if it is pure luck , the Strategy only works when it is to be useful, on the other hand in sports betting it does not , so I am more inclined to think that it can be a skill.