What would you say is the most underrated playoff upset in NFL history?

If you had to pick one?

I’m gonna go with the Vikings over the 49ers in the 1987 divisional round. The 49ers were 11 point favorites at home against an average Vikings team who had never won anything. This team looked to be at the peak of their powers with Montana Rice and Walsh. Some people said at the time that his 49ers team was better than the 81 and 84 teams that won titles. They were expected to cruise to the SB.

Then this Vikings team went into that building and dominated. Montana played one of the worst playoff games of his career, he actually got benched. I feel like this is a top 5 upset in history.