Alex Collins has now lost two fumbles in four games after he was stripped by Pittsburgh free safety Sean Davis (Maryland) at the Steelers’ 2 and the loose ball was recovered by rookie strong safety Terrell Edmunds in the second quarter. The Ravens running back fumbled the ball four times and lost two of them last season. … The Steelers deactivated safeties Morgan Burnett (groin) and rookie Marcus Allen, offensive tackle Zach Banner, slot cornerback Mike Hilton (elbow), wide receiver Justin Hunter, rookie quarterback Mason Rudolph and defensive end L.T. Walton. … Brown, outside linebacker Za’Darius Smith and kicker Justin Tucker represented the Ravens for the coin toss, which was won by Pittsburgh. The Ravens opened the game by receiving the ball.