The Baltimore Ravens placed LB Prescott Burgess on Injured Reserve (thigh) Tuesday afternoon. Burgess, a sixth-round draft choice by Baltimore in 2007, has seen action in 40 career games. He sustained the injury this past Sunday in the win over Arizona. The 6-foot-3, 253-pounder appeared in three games with the Ravens this season, recording one assisted tackle and two special teams tackles. In addition, the Ravens made two practice squad changes Tuesday, waiving S Mana Silva and re-signing WR Rodney Bradley.