The team announced they had placed veteran defensive end Chris Canty on season-ending injured reserve with a pectoral tear, and waived quarterback Bryn Renner and return man Raheem Mostert.
To fill those three roster spots, the Ravens signed Mallett, and promoted running back Terrence McGee and cornerback Jumal Rolle from their practice squad.
Canty was drafted by theDallas Cowboys in the fourth round of the 2005 NFL Draft. He has also played for the New York Giants, winning Super Bowl XLVI with them in 2011. He played college football at Virginia.