Ngata, who was a limited participant in practice, missed last week's game because of a left knee injury. Coach John Harbaugh told reporters that the team would need to see how Ngata looks Saturday before deciding whether he can play the Jets.
Linebacker Daryl Smith (thigh) and cornerback Lardarius Webb (abs) were also listed as questionable while receivers Marlon Brown (knee) and Brandon Stokley (thigh) are probable for Sunday.
Like the Ravens, the Jets haven't ruled anyone out. Linebacker Garrett McIntyre (knee) and wideout Jeremy Kerley (elbow) are doubtful while nine others are probable: offensive lineman Willie Colon (calf), cornerback Antonio Cromartie (hip), defensive lineman Kenrick Ellis (back), quarterback David Garrard (knee), receivers Stephen Hill (knee), Santonio Holmes (foot/hamstring), David Nelson (illness) and Greg Salas (finger), and tight end Kellen Winslow (knee).