Quinn was waived by the Dolphins on Tuesday, Andrew Abramson of the Palm Beach Post reports.

Quinn was brought of a brief retirement to battle with Matt Moore for the top backup job behind Ryan Tannehill, but his struggles in training camp practices ultimately sealed his fate. The former first-round draft choice may elect to call it a career for good this time.

Quinn signed with the Dolphins on Monday, Jeff Darlington of NFL Network reports.

The Dolphins already have a veteran presence in Matt Moore in the QB ranks behind starter Ryan Tannehill, but Quinn will undoubtedly push Pat Devlin and Brock Jensen for the third-string gig. However, Quinn hasn't thrown a pass as a professional since 2012 with the Chiefs.

Free agent QB Brady Quinn is currently rehabbing from back discectomy surgery and hoping to continue his playing career.

Quinn, 29, had surgery last November after bouncing between the Seahawks, Rams, and Jets. Ross Tucker's Podcast with Quinn -- available at the link below -- is a recommended listen. Quinn describes how different the Super Bowl champion Seahawks are from other teams, explains what the NFL Scouting Combine is like, and opines on why he failed to live up to his first-round draft status.

Brady Quinn (injured reserve) underwent a microscopic lumbar discectomy surgery in Los Angeles on Tuesday.

In layman's terms, Quinn had back surgery. Dr. Robert Watkins performed the surgery. It's the same operation Rob Gronkowski had in June. The Rams previously announced that Quinn was placed on I.R. with a hip injury last weekend. Either way, he's done for the season and should be ready for 2014.

Rams placed QB Brady Quinn (hip) on injured reserve, ending his season.

Quinn was signed in Week 8 and spent the last three games inactive as the No. 3 quarterback. Austin Davis will continue to handle backup duties behind Kellen Clemens. The Rams have promoted CB Quinton Pointer from the practice squad to replace Quinn on the active roster.

Rams signed QB Brady Quinn.

Jets released QB Brady Quinn.

Jets declared QB Brady Quinn, LB Ricky Sapp, OL William Campbell, OT Ben Ijalana, OL Oday Aboushi, WR Ryan Spadola, and LB Scott Solomon inactive for Week 3 against the Bills.

Quinn is the Jets' third-string quarterback behind Geno Smith and Matt Simms. Quinton Coples is back from an ankle injury and will make his season debut.

Jets re-signed QB Brady Quinn.

The Jets didn't want to guarantee Quinn's contract, so they let him go on Saturday. Now he's back to serve as depth behind Geno Smith and Matt Simms. Mark Sanchez is meeting with Dr. James Andrews this week to get a second opinion on his throwing shoulder.

Jets released QB Brady Quinn.

As expected. Quinn's salary would have became guaranteed had he been on the roster at 4 PM ET Saturday. The Jets will go into the opener with Geno Smith and Matt Simms at quarterback. Quinn will likely be re-signed Monday afternoon. He's only going to be on the roster for however long Mark Sanchez is out.

The Jets have discussed releasing Brady Quinn on Saturday.

Quinn's salary becomes guaranteed for the season if he is on the roster at 4 PM ET Saturday. The Jets can cut him then re-sign him Monday. There's a good chance it will happen. We'll likely see a few veterans get the ax around the league this afternoon. Quinn is the Jets' No. 3 quarterback this week.

Jets signed QB Brady Quinn and released QB Graham Harrell.

Quinn enters the fray in Rex Ryan's quarterback carousel, which also includes Geno Smith, Mark Sanchez and Matt Simms. Quinn has gone 4-16 in 20 career starts, holds a 53.9 completion percentage and has a 12:17 TD-to-INT ratio. In other words, the Jets are still grasping at straws. Smith remains the most likely starter in Sunday's opener against the Bucs.

Seahawks released QB Brady Quinn.

Quinn handled himself well in the preseason, going 22-of-38 for 271 yards with two touchdowns and no interceptions. But he never had a realistic shot to beat out Tarvaris Jackson for the No. 2 gig behind Russell Wilson. Quarterback-needy teams like the Bills could do worse than kicking the tires on Quinn.

The Seattle Times doesn't expect Brady Quinn to make the Seahawks' final roster.

Tarvaris Jackson is locked in as Russell Wilson's backup. Quinn has had a pretty solid preseason while playing against mainly second- and third-stringers, completing 14-of-23 passes (60.9 percent) for 161 yards (7.0 YPA), two touchdowns, and no turnovers. He'll likely be one of the top quarterbacks cut.

Seahawks agreed to terms with QB Brady Quinn, formerly of the Chiefs.

ESPN's Ed Werder reports the Seahawks were "most impressed" with Brady Quinn at Monday's four-QB tryout, and hope to sign him as Russell Wilson's backup.

Quinn worked out along with Matt Leinart, Seneca Wallace and Tyler Thigpen. It's good that Quinn was impressive in person, as he certainly wouldn't be impressive on film. He's also a polar opposite to Wilson in terms of skill-set. A point in Quinn's favor is his cheap price, but it's not as if any of Leinart, Wallace and Thigpen would be expensive.

The Seahawks will work out four free agent quarterbacks on Monday: Brady Quinn, Matt Leinart, Seneca Wallace, and Tyler Thigpen.

It sounds like the best workout performer will get a contract offer. Leinart played for Seahawks coach Pete Carroll at USC. Quinn has generated next to no free-agent interest. Wallace turns 34 in August and is the elder statesman of the group. Thigpen is athletic with experience in the Pistol Spread offense.

ESPN New York says the Jets "may still" sign free agent Brady Quinn even after signing David Garrard on Monday.

GM John Idzik is poised to add as much "competition" for Mark Sanchez as he can get, but Quinn is just as terrible -- maybe more so -- as the Sanchize. Quinn has a history with QBs coach David Lee, though, who reportedly loves him. The Jets already have five quarterbacks on the roster.

The New York Daily News confirms free agent Brady Quinn is on the Jets' "radar."

ESPN's Chris Mortensen reported last month that New York was Quinn's most likely destination. The Jets have already worked out David Garrard, but missed out on another potential target when Matt Moore re-upped with the Dolphins Friday. Quinn is the kind of "competition" Mark Sanchez would embrace. Quinn's 60.1 QB rating would have been the worst in the league (by far) last season had he thrown enough passes to qualify.

ESPN's Chris Mortensen reported on NFL 32 that free agent Brady Quinn will likely end up with the Jets.

Per Mortensen, the Jets plan to sign two free-agent quarterbacks. Quinn has history with new Jets QBs coach David Lee, who "likes (Quinn) a lot." New York will reportedly bring five quarterbacks to training camp, not including Tim Tebow. In this scenario, Quinn, Mark Sanchez, Greg McElroy, and Matt Simms would account for four, and they'd add one more free-agent veteran to the mix.