OWINGS MILLS, Md. (AP) - The Baltimore Ravens are riding a three-game winning streak and getting significant contributions from some unlikely heroes.

Reserve cornerback Corey Graham helped the Ravens hold off Pittsburgh 13-10 on Sunday night.

Filling in for the injured Jimmy Smith, Graham had an interception and knocked a pass away in the end zone in the third quarter to help hold the Steelers to a field goal. Backup safety James Ihedigbo tallied a crucial sack that forced a punt in the fourth quarter.

Receiver Jacoby Jones, a free agent signing this offseason like Graham and Ihedigbo, returned a punt 63 yards for a touchdown in the first quarter. It was Jones' third return for a TD this season, having also run back two kickoffs for scores.

Baltimore plays San Diego on Sunday.