Best&Worst: Best Divisions in Sports

I like lists. They're neat and organized. So I decided to start doing a Best&Worst segment (nothing set, just as often as I want) which will either count down the 5 Best, 5 Worst, or both of a specific topic. The first one is "Divisions in Sports", in case you couldn't read the title, and this first article is the top 5. Since I find this topic interesting and it's the first of the segment I will be posting a Worst 5 soon. This list takes a look at success/talent/competitiveness in the past decade, with extra emphasis on the most recent season. Enjoy and feel free to tell me how wrong you think I am.