Answered January 13th, 2020

Gary Marangi has the lowest passer rating by a quarterback in a game with 30+ passing attempts, with a 0.0 rating against the San Diego Chargers on November 21, 1976.

which qb has the worst passer rating in a game with at least 30 att
Interpreted as:
Which qb has the worst passer rating in a regular-season game with at least 30 passing att?

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