SixtiesFan wrote:This question came up several years ago. I'll answer it again.
On September 29, 1974 at Buffalo, the Bills beat the Jets 16-12. Joe Ferguson, the winning QB, was 0-2 passing for 0 yards. O.J. had 31 carries for 117 yards. Jim Braxton carried 17 for 84 yards and the winning TD.
Joe Namath was 2-18-33 with 3 interceptions. I saw the game on TV. There was rain and crosswinds, passing impossible.
The OP specified that sack yardage counted. The Bills were not sacked in that game. 0 yards is not the negative record for a victory.
These games had negative passing yardage in a victory:
11-27-1955, Redskins beat Steelers 23-14. 1 for 9 passing for minus 3 yards, -29 yards in sacks.
10-10-1971, Rams beat 49ers 20-13. 2 for 12 passing for 13 yards, -31 yards in sacks.
12-11-1977, Eagles beat Giants 17-14. 4 for 10 passing for 33 yards, -46 yards in sacks.
10-24-1965, Packers beat Cowboys 13-3. 4 for 19 passing for 42 yards, -52 yards in sacks.
12-3-2006, Houston Texans beat Raiders 23-14. 7 for 14 passing for 32 yards, -37 yards in sacks.
11-9-1952, Rams beat Dallas Texans (NFL) 27-6. 5 for 17 passing for 8 yards, -13 yards in sacks.
10-4-1981, Oilers beat Bengals 17-10 1 for 6 passing for 3 yards, -7 yards in sacks.
10-13-1974, Packers beat Rams 17-6. 2 for 9 passing for 17 yards, -18 yards in sacks.