A red zone FG is 37 yards or less.
In 2013 and 2014, the Zuerlein had 17 FG's inside the 40.
In 2017 Zuerlein had 20 FG's inside the 40 with 1 miss
Sam Ficken had 2 FG's inside the 40 with 1 miss.
We should note that Zuerlein was 12 of 12 from 40-49.
I think it's safe to say, we had red zone issues.