Buffalo Bills beat Miami Dolphins, 23–18

The Bills closed as 4.5-point underdogs and won outright.

It was the 2nd-biggest of 2 NFL upsets in 1999 Week 4, and the 35th-biggest of the 1999 season. Buffalo Bills pulled off 1 other upset in 1999.

Other NFL upsets in 1999 Week 4

1. New York Jets 21, Denver Broncos 13

   5.5-point underdogRecap
   Upset size5.5

Buffalo Bills’ other 1999 upsets

1. Buffalo Bills 34, Washington Commanders 17

   Week 94-point underdogRecap
   Upset size4

More: Buffalo Bills upsets · Miami Dolphins upsets · all Week 4 upsets · how upset size works