Cincinnati Bengals stun Pittsburgh Steelers, 27–20

The Bengals closed as 11-point underdogs and won outright.

It was the biggest of 4 NFL upsets in 1999 Week 12, and the 3rd-biggest of the 1999 season. It was Cincinnati Bengals's only upset win of 1999.

Other NFL upsets in 1999 Week 12

1. Tampa Bay Buccaneers 16, Seattle Seahawks 3

   6-point underdogRecap
   Upset size6
2. Arizona Cardinals 34, New York Giants 24

   4.5-point underdogRecap
   Upset size4.5
3. Kansas City Chiefs 37, Oakland Raiders 34

   3.5-point underdogRecap
   Upset size3.5

More: Cincinnati Bengals upsets · Pittsburgh Steelers upsets · all Week 12 upsets · how upset size works