That was it. It's the Sonny Jurgensen story.
by G.K.Chesterton (2022-01-15 15:39:00)

In reply to: I think GK’s point was if 90% of one’s “similar players”  posted by Father Nieuwland

Sonny Jurgensen is in the Pro Football HOF, but he never started a playoff game and in the only playoff game he appeared in, he was 6-12 for 78 yards and 3 INTs, including a pick-six.

I have not looked at Roy's playoff record - perhaps he won all five games.