End zone: Undrafted rookie Ricky Ortiz was the first fullback to enter the game for the Ravens. Kamalei Correa started at his usual weak-side linebacker position and alternated defensive series with Patrick Onwuasor. … General manager Ozzie Newsome hugged former Ravens and current Buffalo Bills quarterback Tyrod Taylor during pregame warmups. Taylor, who was drafted by the Ravens in the sixth round in 2011, spent four seasons with the Ravens before joining the Bills in 2015. … In addition to Taylor, Buffalo cornerback Shareece Wright, guard Vladimir Ducasse, kicker Steven Hauschka and wide receiver Jeremy Butler returned to Baltimore after playing for the Ravens. Harbaugh and several other coaches greeted three former Ravens and current Bills assistant coaches in defensive coordinator Leslie Frazier, offensive coordinator Rick Dennison and offensive line coach Juan Castillo. … Buffalo played without starting defensive tackle Marcell Dareus, who was sent home after violating a team rule. … Cornerback Brandon Carr, strong safety Tony Jefferson, Anthony Levine Sr., Jeremy Maclin and right guard Marshal Yanda represented the Ravens for the pregame coin toss.