(This article was updated to correct a date)

Green Bay fans know well that the NFL is rife with upsets — the last two Green Bay Packers games drove home that point.

The Packers sat out last week on bye, but while they did, upsets continued. For example, the Denver Broncos defeated the previously undefeated Philadelphia Eagles 21-17 in Philadelphia, the New England Patriots defeated the previously undefeated Buffalo Bills 23-20 in Buffalo, and, in a smaller upset universe, the Tennessee Titans defeated the Arizona Cardinals 22-21 in Arizona.

The Packers will face three of those teams — the Eagles, Broncos and Cardinals — in the coming weeks.

The following are secondary market ticket prices as of Oct. 6 and our guesses as to why they are where they are.

For our look at Packe

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