BALTIMORE -- The New England Patriots are still perfect, but looking mighty vulnerable.

New England pulled off its greatest escape thus far to become the sixth team in NFL history to start a season with 12 victories. For the second straight week, it was a struggle against a losing team, but the incredibly resourceful Patriots got Tom Brady's 8-yard touchdown pass to Jabar Gaffney with 44 seconds left to beat the Baltimore Ravens 27-24 Monday night.

The winning drive in the final minutes covered 73 yards and required two fourth-down conversions, one on a defensive holding penalty 6 seconds before Gaffney beat Dawan Landry in the left corner of the end zone.

Driven to distraction by a Baltimore defense at times reminiscent of the 2000 unit that led the Ravens (4-8) to a Super Bowl victory, Brady came through late -- as he always seems to.

Eight days after edging Philadelphia 31-28, the Patriots barely kept alive their pursuit of the only unblemished record in NFL history, Miami's 17-0 in 1972.

With Pittsburgh (9-3) up next, the Patriots must recapture some of their record-setting ways from earlier in the season to keep their flawless record intact.