The Rams informed Sullivan on Tuesday that they wouldn't exercise his $6 million team option for 2019, Lindsey Thiry of ESPN.com reports.
Sullivan is still a solid player despite his advanced age, so his release is likely only for cap-relief purposes. With the 33-year-old's salary off the books, the Rams are expected to turn to 2018 fourth-round pick Brian Allen as their first-string center when OTAs begin.
Sullivan returned to Sunday's game after being evaluated for a concussion, Myles Simmons of the Rams' official site reports.
Sullivan briefly left Sunday's contest after being kneed in the back of the head in the first quarter, but he passed the necessary concussion tests, and was cleared to return to action.
Sullivan exited Sunday's game against the Bears and is being evaluated for a concussion.
Sullivan was injured in the first quarter and replaced by Brian Allen. The tests will determine whether Sullivan can return to the game or will be placed in the league's concussion protocol.
Sullivan (arm) is not listed on Thursday's injury report, Myles Simmons of the Rams' official site reports.
Sullivan suffered an arm injury back in late July, but he was never in any real danger of missing Week 1. The starting center for the Rams looks good to go ahead of Monday's season opener in Oakland.
Sullivan suffered an arm injury during practice Sunday, Lindsey Thiry of ESPN reports.
Head coach Sean McVay said Sunday that team trainer Reggie Scott did not seem too concerned about the center's injury. Sullivan was forced to leave practice, but he shouldn't be out for too long.
The Rams signed Sullivan to a two-year contract Friday.
The Rams will bring back their starting center from one of the best NFL offenses in 2017, and with him a continued feeling of familiarity for starting quarterback Jared Goff.
Sullivan (rest) won't play in Sunday's game against the 49ers.
Sullivan doesn't appear on the injury report. However, the Rams evidently believe they have little to gain by winning Sunday, so they're opting to rest their 32-year-old veteran. Second-year center Austin Blythe will presumably take his place in the starting lineup.
Sullivan injured his hand in Sunday's game against the Titans, Alden Gonzalez of ESPN.com reports.
He will be questionable entering Week 17 as the Rams prepare for the 49ers. Austin Blythe would replace Sullivan if he can't go.
Sullivan hurt his knee Sunday against the Cardinals and is questionable to return, Lindsey Thiry of the Los Angeles Times reports.
Sullivan is a key part of one of the best offensive lines in football, but if he can't return, expect Austin Blythe to take over the remaining snaps.
Sullivan (hip) is listed as active for Sunday's game against the Cowboys, Rich Hammond of the Los Angeles Daily News reports.
Now that Sullivan's healthy, he'll slot back in as the Rams' starting center.
Sullivan (hip) is questionable to play Sunday against the Cowboys.
Sullivan injured his hip last weekend against the 49ers and missed practice Wednesday before logging limited sessions Thursday and Friday. If Sullivan is ultimately ruled out, Austin Blythe would get the start at center.
Sullivan is questionable to return to Thursday's game against the 49ers with a groin injury, Omar Ruiz of NFL Network reports.
Sullivan will be replaced by Austin Blythe in the meantime. Look for more updates on Sullivan's status to come Friday.
Sullivan signed with the Rams on Wednesday, Myles Simmons of the team's official site reports.
Following a successful eight-year run with the Vikings, Sullivan latched on with the Redskins in 2016, making one start. He has familiarity with new Rams coach Sean McVay through their time together in Washington, and Sullivan could have a legitimate chance to claim a starting role for Los Angeles considering the team released Tim Barnes prior to free agency.
Sullivan (illness) is active for Monday's game against the Panthers.
Sullivan was held out of Saturday's practice session due to illness and his status for Monday was up in the air as a result. As a depth offensive lineman he's unlikely to see much time, barring injuries that would force him into a larger role.
Sullivan (illness) is considered questionable for Monday's matchup against the Panthers.
Sullivan did not participate in practice Saturday due to an undisclosed illness, but he may be able to play through the issue on Monday depending on the severity.
The Vikings placed center John Sullivan on short-term injured reserve Thursday due to a back injury. He is eligible to practice after six weeks and can play in game after eight weeks.
The team also announced Sullivan underwent a lumbar microdiscectomy Wednesday.
"As a player you never want to miss time," Sullivan said. "Regardless of the circumstances surrounding your absence, you feel guilty about not fulfilling your responsibility to your teammates, coaches, organization and fans by giving it your absolute best out on the field every Sunday.
"While I'm incredibly disappointed that I'll be missing the first portion of the 2015 season, I have full faith in the roster that our coaches and front office have put together. Joe Berger will step in and do a great job leading our offensive line, protecting the best young quarterback in football and opening up holes in the running game.
"In the meantime, I promise I'll be doing everything I can to recover and I'll be ready as soon as humanly possible to return to the field and help the Vikings win their first Super Bowl Championship."
The status of Vikings running back Adrian Peterson is up in the air, and while the veteran may not have interest in returning to Minnesota, center John Sullivan made it clear Thursday's night in an interview on Sirius XM NFL Radio Thursday night that the Minnesota players want Peterson back, Pro Football Talk reports.
"We want him back. There is no doubt the players want him back," Sullivan said. "He missed an entire season. He more than paid his dues with this whole thing. I respect him as a man. I don’t want to talk too much about it just because I don’t want to put too much conjecture out there but I just hope it works itself out and he comes back and joins us. We have open arms here waiting for him. We want to rush for the 2,500 yards that he talked about a couple of years ago."
The league reportedly filed an appeal in the Peterson case Wednesday to preserve the disciplinary powers of commissioner Roger Goodell. Peterson met with Goodell Tuesday, but an official decision on his reinstatement has yet to be announced.
The Vikings announced Tuesday they extended center John Sullivan's contract by one year through the 2017 season.
"I want to start by saying thank you to the Minnesota Vikings for putting their faith in me as a person and football player," Sullivan said. "The Vikings have been with me through professional highs and lows, and have stood by my side and supported me through personal hardships. My ability to express the true depth of my gratitude comes from my actions on and off the field."
The Vikings extended center John Sullivan's contract by one year through the 2017 season, a source told ESPN.
Sullivan will receive a base salary of $7 million in 2015 and $5.5 million in 2016 and 2017. Sullivan, 29, has started in all 48 games for the Vikings over the last three seasons.
The Vikings have placed 11 players on their Friday injury report, but only two have been deemed worse than questionable. They are ruled-out tight end Kyle Rudolph (abdomen/groin) and doubtful linebacker Gerald Hodges (hamstring).
Guard Vladimir Ducasse (knee), safety Antone Exum (ankle) and cornerback Josh Robinson (ankle) are questionable. The probables are tight end Chase Ford (foot), defensive tackle Sharrif Floyd (ankle), cornerback Jabari Price (hamstring), safety Harrison Smith (ankle), center John Sullivan (concussion) and defensive end Corey Wootton (back).