Harrison recorded eight tackles (five solo) including a sack in Pittsburgh's 23-20 overtime loss to Baltimore on Thursday.

The sack was the first of the season for Harrison, who joined Jason Gildon (77.0) as only the second player in team history to record 70.0 sacks since the statistic became official in 1982.

Harrison (thumb) is active for Thursday's game against the Ravens, Pittsburgh Post-Gazette's Gerry Dulac reports.

Listed as probable, Harrison never seemed to be in much danger of missing the game. He'll provide depth at outside linebacker behind starters Jarvis Jones and Arthur Moats.

Harrison (thumb) is listed as probable for Thursday's game against the Ravens.

Despite the name recognition, Harrison's IDP impact this season has been modest. Through three games, the linebacker has recorded just eight tackles.

Harrison (thumb) logged a full practice Tuesday.

Harrison's thumb may be feeling a little tender, but it doesn't appear to be an issue severe enough to keep him out of Thursday's tilt with the Ravens. The 37-year-old made headlines during the offseason after he posted on Instagram about taking away his kids' participation trophies, but he's been much more quiet on the playing field through three weeks. He has yet to record a sack and has collected only eight tackles.

Harrison will return to the practice field next week, Bob Labriola of Steelers Digest reports.

Harrison has been taking things slowly since camp opened, but the veteran is expected to ramp up his activity after the team returns from its preseason opener Sunday against the Vikings.

Harrison signed a two-year contract with the Steelers on Sunday.

Harrison initially said he wanted to play one more season, but his two-year contract could be indicative that he will play more than that. Between the Bengals and Steelers last season, the 12-year vet recorded 45 tackles (29 solo) and 5.5 sacks. He'll likely slot in opposite Jarvis Jones heading into the 2015 season.

Harrison has decided he wants to play one more season, the Pittsburgh Post-Gazette reports. "I decided to hold off on retirement, so it's time to pack up and head to AZ to start my training so I can be ready to play another year," Harrison wrote on Twitter and Instagram Sunday.

The ball is in the Steelers' hands now, as Harrison becomes an unrestricted free agent March 10 if Pittsburgh does not sign him before then. Currently, Jarvis Jones is the only outside linebacker with experience under contract.

Harrison totaled four tackles (two solo) in Pittsburgh's 27-17 win over Cincinnati on Sunday night.

Harrison came out of retirement to play in 11 games this season, finishing with 44 tackles and 5.5 sacks. He will turn 37 before next season and may again elect to retire.

Harrison (knee) is active for Sunday's game against the Chiefs.

Harrison will be back in action after missing two consecutive games and is an IDP option.

Harrison (knee) is listed as probable for Sunday's game against the Chiefs, ESPN.com reports.

Harrison, who has been out for the past two weeks, appears on track to return to action Sunday. He's recorded 34 tackles and four sacks in nine games to date, numbers that put him on the radar in deeper IDP formats.

Harrison (knee) is officially inactive for Sunday's game at Atlanta.

It was thought Harrison might be able to return to action at least on a limited basis for this game, but apparently he is not yet ready.

Harrison (knee) is listed as questionable for Sunday's game against the Falcons, Scott Brown of ESPN reports.

Harrison was limited in practice Thursday and Friday, so while he's capable of playing, the Steelers likely wouldn't push him to be anything more than a third down-only pass rusher.

Harrison (knee) is officially inactive for Sunday's game at Cincinnati.

Arthur Moats should see more playing time at the right outside linebacker spot in Harrison's absence.

Harrison (knee) is doubtful for Sunday's game against the Bengals, according to Dale Lolley of the Observer-Reporter.

Harrison, who recorded seven tackles in Week 13, has carved out some deep league utility in recent weeks, but the doubtful designation eliminates him from the IDP equation this weekend.

Harrison collected secen tackles (fours solo) including two sacks in Pittsburgh's 43-23 win over Baltimore on Sunday.

Harrison now leads the team with four sacks despite only playing in six games this season. He deserves serious fantasy consideration in IDP formats for Week 10 against a Jets offense that has significant quarterback issues and has allowed 25 sacks, which is fifth worst in the league.

Harrison had just one tackle (solo) for a sack in Pittsburgh's 54-31 win over the Colts on Sunday.

This was Harrison's first sack of the season since coming out of retirement a few weeks ago. he'll try to add to his franchise-leading 65 sacks in Week 9 against the Ravens, who have yeilded just nine sacks this season.

Harrison recorded four tackles (three solo) against Cleveland on Sunday.

The tackles were the first of the season for Harrison, who came out of retirement and rejoined the Steelers three weeks ago. The defense, which has struggled to pressure opposing quarterbacks and to force turnovers, will be tested in Week 7 when they host Houston on Monday night.

Harrison's role in the Steelers' defense for their Week 4 game against Tampa Bay has yet to be determined, the Pittsburgh Post-Gazette reports. "I've been pleased with what I've seen," said defefensive coordinator Dick LeBeau. "We'll have to keep our eye on him, but it's been good seeing him out there."

Much has been made about Harrison's level of aerobic conditioning, and training on your own is a far cry from an NFL training camp. Then there's the issue of age, as Harrison turned 36 in the off-season. Despite all the injuries to the Pittsburgh defensive unit, fantasy owners should temper their expectations of Harrison in terms of fantasy production.

Harrison has un-retired and signed with the Steelers as expected on Tuesday, ESPN.com reports. According to Coach Mike Tomlin, the re-signing was "a simple and easy decision for us. We know James. James knows us."

The move became necessary after Pittsburgh placed second-year outside linebacker Jarvis Jones (wrist) on the injured reserve/designated for return list on Monday. Harrison played in 15 games for the Bengals last season, starting 10 of them, recording 30 tackles and two sacks. He is second on the Steelers' all-time sacks list with 64, and will have an opportunity to add to that total in Week 4 against Tampa Bay.

Harrison is expected to sign with the Steelers this week, NFL.com reports.

Harrison announced his retirement a month ago, but with the Steelers in dire need of help at linebacker, the 36-year-old will return to the team for which he played nine NFL seasons. Pittsburgh lost Ryan Shazier (knee) and Jarvis Jones (wrist) recently, and has few experienced players to fill the void. While Harrison no longer has elite explosion, he's familiar with defensive coordinator Dick LeBeau's system and can still defend the run. Assuming the signing goes through, Harrison will likely compete with Arthur Moats for playing time.