Ravens' John Harbaugh was asked if he believes in momentum? (Kevin Richardson / Baltimore Sun video)

After sitting out Wednesday’s practice, middle linebacker C.J. Mosley was a full participant in Thursday’s session, according to the Ravens’ second injury report of the week.

The upgrade suggests that Mosley — who is tied for fifth in the NFL in tackles with 101 and has two interceptions, two forced fumbles, two fumble recoveries and one sack — will make his usual start in Sunday night’s game at the Pittsburgh Steelers.


Wide receiver Jeremy Maclin (back) and outside linebacker Za’Darius Smith (shoulder) did not practice Thursday. Smith missed his second consecutive day, but Maclin had participated on a limited basis Wednesday.

Rookie guard Jermaine Eluemunor (shoulder) was limited for the second straight day.

Pittsburgh practiced for the second consecutive day without linebackers Ryan Shazier (spinal contusion) and Tyler Matakevich (shoulder) and cornerback Joe Haden (broken left fibula). Starting wide receiver Antonio Brown also did not take part in Thursday’s session because of a toe ailment that prevented him from practicing twice last week.

Starting rookie outside linebacker T.J. Watt (knee) was also a new addition, participating on a limited basis. Starting free safety Mike Mitchell (ankle) practiced fully for the second straight day.

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Mornhinweg says Flacco healthier now: Joe Flacco has not been on the injury report since suffering a concussion in a 40-0 defeat of the Miami Dolphins on Oct. 26, and the back pain he dealt with in the preseason is no longer a problem.

The quarterback’s improved health is a welcome development for the offense, which enjoyed its best outing Sunday. In that game, Flacco threw for a season-high 269 yards and posted his first two-touchdown, zero-interception outing of the year.

Offensive coordinator Marty Mornhinweg said he has noticed a change in Flacco’s fitness, which has allowed him to be more mobile in the pocket, as he was Sunday.

“I think he’s a little bit more healthy than he has [been],” Mornhinweg said. “I think people forget that he came in with a little back issue with three or four days of practices to start the season. So my thought looking back on it was, let’s be in the thing at about midseason [with] Joe healthy. I thought that would be key. So here we are, and he’s about as healthy as he’s been all year.”

Much from Moore: Mornhinweg said he likes what he has seen from Chris Moore, who has caught six balls for 69 yards as the No. 3 wide receiver in the team’s past two games. “I’ve been impressed with Chris,” Mornhinweg said. “I think he’s feeling comfortable with his assignments and alignments. He has some experience now. I don’t want to speak too soon, but he’s been impressive as of late.”

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