I'm not sure if this has been posted here or not, but Alabama finished dead last in opponent penalty yards per game:
https://www.teamrankings.com/college-football/stat/opponent-penalty-yards-per-game
For those keeping count, this year they were 130/130, last year they were 128/128, the year before they were somehow 85/128 (I bet it was heavily skewed by a game or two), but that was proceeded by 127/128.
There's no way on earth to look at that and conclude that the refs are biased in favor of Alabama, clearly it is the other way around. It is a remarkable amount of bias, consider the just random chance of being 130/130, 128/128 and then 127/128 in a four year stretch.