From the episode

the two worst passing performances for Brock Purdy have come against the Seattle Seahawks and Mike McDonald's defense. And I think if you go back even further, if you go back to when Mike McDonald was on the Baltimore Ravens as well, that was also one of Brock Purdy's worst quarterback rating performances

STACKED’s take

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McDonald's defenses have held Purdy to worst performances historically.

The two worst passing performances for Purdy in recent years have come against Seattle and Mike McDonald's defense; McDonald also had success against Purdy when coaching the Baltimore Ravens, suggesting a historical pattern where McDonald's defensive schemes neutralize Purdy's strengths.

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