#5 Choosing the wrong quarterback
It’s no secret that the Las Vegas Raiders started the wrong quarterback at the beginning of the season- Derek Carr. Now, the horrible season wasn't entirely his fault, especially since he managed to stay healthy through most of the year, but he was never able to get the most out of his offense.
Whether it was his wide receivers or his running backs, Carr’s gameplay very much relied on someone to relieve him when he was having bad luck. Of course, that strategy worked on occasion, but Carr just looked outclassed too many times to deserve a spot on the field.