Ngata returned to practice Friday after sitting out the past two days with a knee injury. This is an encouraging sign for Ngata, who walked off the practice field without a limp. He hasn't missed back-to-back games since November 2009.
The other Ravens listed as questionable are: linebacker Daryl Smith (thigh) and cornerback Lardarius Webb (abs). They were limited in Friday's practice.
Ngata, Smith and Webb should all be available Sunday.
Here is the Ravens' official injury report:
QUESTIONABLE: DT Haloti Ngata (knee), LB Daryl Smith (thigh) and CB Lardarius Webb (abs).