2015 NFL Free Agency: Star rating is out of five. Age listing as of Sept. 1, 2015.
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Bryan Bulaga, OT, Packers. Age: 26. Re-signed with Packers (5 years, $35 million)
Bryan Bulaga is one of the top right tackles in the NFL. He was missed last year when he tore his ACL, but he rebounded in 2014, as it appeared as though he was never injured in the first place.
Doug Free, OT, Cowboys. Age: 31. Re-signed with Cowboys (3 years, $15 million)
Doug Free was so awful during the 2012 season that there was speculation that he would be released. The Cowboys kept him, and it paid off, as he has been a very solid right tackle over the past two years, especially in run blocking.
Michael Roos, OT, Titans. Age: 32. Announced retirement
Michael Roos can still block well, but he's a 32-year-old coming off knee surgery. He'll be a risky signing, but could potentially still serve as a decent blind-side protector.
King Dunlap, OT, Chargers. Age: 29. Re-signed with Chargers (4 years, $28 million)
King Dunlap shocked the world by playing extremely well in 2013. He took a step backward this past season, but was still a solid blind-side protector, especially down the stretch.
Joseph Barksdale, OT, Rams. Age: 27. Signed with Chargers
Joseph Barksdale is a decent right tackle. He blew open big running lanes for Tre Mason this past season, but struggled a bit in pass protection, surrendering seven sacks.
Jermey Parnell, OT, Cowboys. Age: 29. Signed with Jaguars (5 years, $32 million)
The Cowboys didn't have a drop-off in blocking when Doug Free got hurt late in the year. That's because Jermey Parnell played well when asked to start. Jerry Jones expressed confidence in Parnell in the past, telling the media that the former Ole Miss product is ready to "take the next step."
Michael Oher, OT, Titans. Age: 29. Signed with Panthers (2 years)
What happened to Michael Oher? He played well early in his career but he has regressed each year. He still has great talent, so perhaps he'll find some way to turn it around, but he shouldn't get any sort of contract like the 4-year, $20 million deal he received last offseason.
Derek Newton played some of the best football of his career down the stretch in 2014, but it's hard to trust him to remain consistent in pass protection.
Jake Long, OT, Rams. Age: 30.
Remember all of the hype Jake Long received in free agency two years ago? It's a reminder of how overblown this time of year always is. Long had two injury-ridden seasons in St. Louis and is coming off a torn ACL. His career could be over.
Anthony Collins, OT, Buccaneers. Age: 29.
Proving how overhyped free agency is, Anthony Collins signed a 5-year, $30 million contract last offseason and remained on the team for exactly one full year. He was constantly penalized and struggled to block. He did play well in Cincinnati though, so perhaps he'll be able to rebound from his dreadful 2014 campaign.
Eric Winston, OT, Bengals. Age: 31. -- Re-signed with Bengals