I don't think it's tanking like the NBA teams do, but for whatever reasons teams are not really trying to improve, especially via free agency where there are bargains left and right. There's about 7 teams that look like they will be really good (Astros, Yankees, Red Sox, Indians, Cubs, Dodgers, Nats), and then a massive drop off of teams that range from possibly decent (Jays, Angels, Cards), to middling to awful. Whether that is by design or just the way it is for now is another question. Some teams clearly do not care, others may just have no other alternative.