Before heading into the bye, Head Coach John Harbaugh indicated the Ravens could shake up their special teams unit.

On Wednesday, the Ravens made two big moves to do just that.

The Ravens waived two vested veterans, safety Michael Huff and defensive end Marcus Spears. Both players were signed this past offseason.

Baltimore signed two practice squad safeties, Omar Brown and Brynden Trawick, to the active roster. They will be counted on for their special teams contributions.

“We’ve got to play better on special teams,” Harbaugh said after a 19-16 loss in Pittsburgh before the bye. “We’re going to go find some guys that want to play special teams.”

Huff was the primary man at fault on the Steelers’ 44-yard kickoff return that set up their game-winning field goal. He got out of his lane and did not maintain containment along the sideline. Harbaugh called it “unforgivable” and Huff took the blame afterwards.

“We’ve got our lanes and we should have been in our lanes,” Huff said. “I’m the safety on that side, so I should have cleaned it up.”

Huff was the Ravens’ starting free safety to begin the year in Denver, and seen by many as the heir to departed safety Ed Reed. But he was replaced by rookie first-round pick Matt Elam by Week 2 and saw sparse defensive action since.

The former first-round pick (2006) of the Oakland Raiders had just six tackles so far this season. A missed tackle in Denver that led to a long gain and eventual touchdown led to him being replaced on defense.

The Ravens signed Huff to a three-year contract reportedly worth $6 million this past offseason.

Spears also wasn’t seeing a lot of time on the defensive line, and was being outperformed by third-round rookie defensive tackle Brandon Williams. Spears, 30, missed two games due to a knee injury. He had just 10 tackles this year and had trouble in his first game back in Pittsburgh.

He did not provide any help on special teams, an area where the Ravens are looking to improve in the second half of the season.