Last nights result notwithstanding, I chalk the last ~6 weeks up to 3 things.
1) Injuries derailed this season. Buxton, Correa, Ryan, Topa, Stewart, Miranda, the list goes on. Leaning on fellas with little to no MLB experience was a recipe for disaster.
2) Inexperience the aforementioned #1. Especially the pitchers not equipped/conditioned to play 162 games.
3) Lack of depth. I don't blame Rocco for this collapse for the most part. Head scratching moves for sure. But he really only had what 2 reliable starting pitchers in Ober and Lopez the whole season and 3.5 reliable relievers all season in Duran, Jax and Sands. Sometimes Alcala. Anyway, Rocco needs to play the players that are available to him on any given day.
This is likely giving him (Rocco) too much of a pass, but I believe that baseball managers get too much credit in success and far too much blame in failure. These players know how to play and they know the fundamentals that some love to preach that Rocco needs to teach more of. At some point these players need to execute and be professional. They will learn and be better for it next year.
They just ran out of gas and Detroit got white hot at the right time.
At least the Vikings and Timberwolves exist.