Thornton was released by the 49ers on Friday.

EDGE Analysis

Thornton came out of retirement in April after sitting out the 2018 season. It appears he did not make enough of an impression to make a serious bid at landing on the 49ers' roster. It is unclear if the 30-year-old will continue his efforts at a comeback after this news.

Thornton was reinstated to the 49ers active roster Monday, Field Yates of ESPN reports.

EDGE Analysis

After announcing his retirement last August, Thornton now rejoins the NFL on the first day of the 49ers offseason program. The 30-year-old has spent time with the Eagles, Cowboys and Bills across seven seasons, and has appeared in 89 career games with 48 starts, 278 tackles and 7.5 sacks. He projects to compete for a depth role along the defensive line this offseason.

Thornton announced his retirement from the NFL on Wednesday.

EDGE Analysis

Thornton's seven-year NFL journey began in Philadelphia as an undrafted free agent. Along the way, Thornton made stops in Dallas, Buffalo and most recently, Tampa Bay. Over his career, Thornton registered 278 tackles and 7.5 sacks.

Thornton signed a contract with the Bills on Tuesday.

EDGE Analysis

The 29-year-old was on the open market for only a few days after the Cowboys cut ties with him when a hamstring injury sidelined him for much of training camp. Buffalo's decision to bring Thornton aboard suggests he's reasonably healthy now, but it's not expected that he'll see many snaps this season behind the dominant defensive tackle tandem of Marcell Dareus and Kyle Williams.

Thornton was released by the Cowboys on Sunday, Todd Archer of ESPN.com reports.

EDGE Analysis

The Cowboys had to cut someone to make room for newly acquired linebacker Jayrone Elliott. Thorton had been dealing with some injuries recently and wasn't expected to be a major contributor among the defensive front this season which made him an expendable candidate.

Thornton (hamstring) made his return to Cowboys' practice Wednesday, David Helman of the Cowboys' official website reports.

EDGE Analysis

Thornton has been bothered by a hamstring injury for several weeks, but is seemingly feeling better. It is unlikely the Cowboys would allow the 29-year-old to participate in practice unless they were comfortable with his health. However, with all the time he has missed during training camp his starting role could potentially be in jeopardy.

Thornton (hamstring) practiced in a limited fashion Monday, Drew Davison of the Fort Worth Star-Telegram reports.

EDGE Analysis

Thornton did not play in Saturday's preseason game against the Colts and has been dealing with a hamstring injury the past couple of weeks. The exact severity of the injury hasn't been specified, but the 29-year-old is reaching a point where his expected starting spot at defensive tackle could be in danger with his limited reps.

Thornton suffered a hamstring injury during practice Tuesday, Brandon George of The Dallas Morning News reports.

EDGE Analysis

Thornton joined Tyrone Crawford (leg) as a starting Cowboys defensive lineman to exit practice early Tuesday. It's unclear how Thornton suffered his injury or how severe it is. If he's limited or held out at all going forward look for Jordan Carrell and Joey Ivie to see some extra reps.

Thornton left Tuesday's practice with a hamstring injury, Clarence Hill Jr of the Star-Telegram reports.

EDGE Analysis

Thornton underwent shoulder surgery back in January, but was cleared for the start of training camp. However, he's now dealing with a hamstring injury following Tuesday's practice, although the exact severity is currently unknown. More details should be provided later this week, but there's a chance Thornton is held out of Saturday's preseason opener against the Rams depending on how the injury responds to treatment.

Thornton underwent shoulder surgery earlier this week, Brandon George of The Dallas Morning News reports.

EDGE Analysis

Thornton had been battling an ankle injury during the playoffs but it looks he's now dealing with some shoulder problems. While there is some cause for concern, the Cowboys remain confident that Thornton will be just fine moving forward. In his first season with Dallas, the 28-year-old recorded 22 tackles across 13 games.