Since 2012, Kyle Lauletta has the worst passer rating by a quarterback when he has had more than 0 (400+ATT), with a 0.0 rating.

lowest passer rating by a quarterback with at least 400 + attempts since 2012; maximum 79 passer rating
Interpreted as:
lowest passer rating by a quarterback with at least 400 + passing attempts since 2012; maximum 79 passer rating

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