Originally Posted by
FourLengthsClear
I am saying that it is a very tough way to try to make money.
The best win rates are achieved by those (and that includes Billy Walters) who use mathematical modeling and whose reputation with the books allows them to 'manipulate' opening/early lines.
Markets in major US sports are very efficient and finding an edge using the same approach as the vast majority of players is hard, very hard. Less efficient/popular markets (e.g. WNBA or minor league soccer matches) are easier but you will have to dig deeper for information, stats etc.