I will tell you why not. And this corresponds directing with your 11 days of losing. Come about April 1, a little earlier for some teams, the NBA and NHL become a nightmare. Final two weeks of the season. (NBA ends tomorrow, NHL on Thursday). You have teams that are locked into their playoff spot, can't go up or down in seeding that start resting players. You have teams that are out of the playoffs that aren't even trying. Swedes just wanting to get back to Sweden to feed the sheep or whatever they do. And the worst of it, you have some teams, especially in the NBA actually trying to lose, to get more balls in the lottery system. So you aren't just trying to figure out who is going to win, but who even is trying or worse case who might be trying to lose.
You gotta stop betting NBA/NHL come April 1, if not before at least until the playoffs.
And this "tanking of games" that is done in the NBA....hell the 76ers did it for a whole season 7-8 years ago in something dubbed "the process" is very, very close to throwing or "fixing"" games in my opinion.