We’ll keep track of today’s practice squad moves here:
Cincinnati Bengals
Dallas Cowboys
Detroit Lions
Miami Dolphins
San Francisco 49ers
Seattle Seahawks
The Lions signed cornerback Tramaine Brock to the practice squad, per a club announcement. To make room, they dropped fellow corner Dee Virgin. 
Brock began the year with the Jaguars, where he stood as one of the few veteran players on the roster. Then, just before he could find out what this newfangled Tik Tok was all about, the grizzled 32-year-old landed on IR. The Jags released Brock in early September, putting him on the open market.
Brock has been off the field for the past few months, but he may get an opportunity to retake the field with fresh legs. That could happen as soon as this weekend, since Darryl Roberts reaggravated his hip injury.
At one point in time, Brock was regarded as one of the league’s better slot corners. He might not be the same player today, but he does offer experience with 117 career games and 56 starts.
The Jaguars have promoted Mike Glennon from the practice squad to the active roster, per a club announcement. Glennon, who will serve as the team’s third quarterback behind Gardner Minshew and rookie Jake Luton, will take the place of linebacker Quincy Williams, who has been placed on IR. 
Luton, a sixth-round pick, pulled off a training camp upset over Glennon and Joshua Dobbs. Still, the Jaguars didn’t want to let the 30-year-old get away. After dropping Glennon from the roster, they quickly scooped him up and stashed him on the practice squad. It’s pretty unusual to see a player with Glennon’s experience on the p-squad, but this is an unusual year, to say the least. The Eagles just made a similar move to backstop their QBs by signing 41-year-old Josh McCown to their practice squad for extra insurance under center.
Glennon has attempted just 31 passes over the last two years combined. For his career, he’s logged 22 starts, 36 touchdowns, and 20 interceptions.
In related moves, the Jags released cornerback Tramaine Brock from IR while adding defensive tackle Daniel Ekuale and former Eagles cornerback Sidney Jones to the taxi squad.
The Jacksonville youth movement continues to plow full steam ahead. The Jaguars will place cornerback Tramaine Brock on injured reserve and end his season, according to Greg Auman of The Athletic (Twitter link).
The long-time veteran was one of very few older players on the hollowed-out roster. The Jags have completely stripped down the team, especially the defense, over the past year. The secondary is going to look completely unrecognizable after former starters Jalen Ramsey and A.J. Bouye were both traded within the last year.
Jacksonville is expected to start rookie first-round pick C.J. Henderson and 24-year-old Tre Herndon on the outside. They’re being thrown into the fire without much help around them. Brock has bounced around the league in recent years, spending time with six different teams over the past four seasons.
The 2010 UDFA spent the first seven years of his career in San Francisco, becoming a reliable starter with the 49ers and landing a couple of decent paydays. He started seven games with the Cardinals last year and four with the Titans, also starting during Tennessee’s run to the AFC Championship Game. He turned 32 last month.
The Jaguars signed cornerback Tramaine Brock following his visit on Sunday, according to Ian Rapoport of NFL.com (on Twitter). The eleventh-year pro has been brought in to fill the void left by Rashaan Melvin‘s opt-out.
[RELATED: Jaguars’ Rashaan Melvin Opts Out]
Brock, long regarded as one of the league’s better slot corners, joined the Cardinals in April of last year. The deal reunited the veteran with Vance Joseph, who set out to build an experienced CB unit for 2019. The Cardinals dropped him in December – even though he was having a solid year – leading him to the Titans for their home stretch. With the Cardinals, Brock tallied 37 stops, two tackles for a loss, and three passes defensed across ten games. With the Titans, he made four regular season starts plus three starts in their memorable postseason run.
Brock was slowed somewhat by a hamstring injury last year, but he’s believed to be fully healed at this stage. In theory, he could be an upgrade over Melvin, who hasn’t truly shined since his 2017 season with the Colts. Brock will feature in Jacksonville’s new look secondary, a unit without Jalen Ramsey and A.J. Bouye. He’ll join D.J. Hayden and promising first-round pick C.J. Henderson in the revamped group.
The Titans claimed cornerback Tramaine Brock off waivers from the Cardinals, a source tells NFL.com’s Mike Garafolo (on Twitter). The move gives the Titans veteran support for their ailing secondary and brings Brock to a team still in the playoff chase.
Brock, long regarded as one of the league’s better slot corners, joined the Cardinals in April. The deal reunited the veteran with Vance Joseph, who set out to build an experienced CB unit for 2019.
The 31-year-old was having a solid individual year, even as the Cardinals struggled. He left Arizona after tallying 37 stops, two tackles for a loss, and three passes defensed across ten games this season.
Brock was dealing with an injury of his own – a hamstring ailment – but is now believed to be healthy. He’ll look to show his stuff for the Titans, who will pay him the remainder of his modest $1MM base salary.
The Cardinals are waiving veteran cornerback Tramaine Brock, according to NFL.com’s Ian Rapoport (on Twitter). The move comes as a surprise, since Brock has been rated as the team’s top cover corner, per Pro Football Focus’ advanced metrics. 
[RELATED: Cardinals To Release Zach Zenner]
Brock, long regarded as one of the league’s better slot corners, joined the Cardinals in April. The deal reunited the veteran with Vance Joseph, who set out to build an experienced CB unit for 2019.
The 31-year-old has been having a solid individual year, even as the Cardinals have sagged. He leaves Arizona after tallying 37 stops, two tackles for a loss, and three passes defensed across ten games.
Before Sunday’s loss to the Rams and the previous week’s bye, Brock was sidelined for a few weeks with a hamstring injury. He’s now believed to be healthy, however, and could be claimed by another team in need. Any team picking up Brock would be responsible for the prorated portion of his $1MM base salary for this year.
As he did during minicamp, Bobby Wagner attended Seahawks practice but merely as an observer. Pete Carroll confirmed (via ESPN.com’s Brady Henderson) the Seahawks and their four-time All-Pro linebacker are discussing an extension but did not elaborate on where the sides are in the process. Longtime Wagner linebacker sidekick K.J. Wright believes a deal is imminent, however. Any extension would probably have to make Wagner the highest-paid off-ball linebacker, and while Deion Jones‘ recent Falcons re-up bridged the gap between C.J. Mosley‘s $17MM-AAV pact and the field, the Jets linebacker still makes over $2.5MM per year more than any other traditional ‘backer. Wagner has confirmed he wants to exceed Mosley’s deal, and this may lead to the eighth-year standout continuing his hold-in strategy.
Shifting first to a former Seahawk who took a different contract-seeking approach last year, here is the latest from out west:
Tramaine Brock will again join a Vance Joseph-coached defense. The one-year Broncos contributor will sign with the Cardinals, Mike Garafolo of NFL.com tweets.
Both Brock and Morris Claiborne visited the Cardinals Monday, and Brock will join a veteran-heavy cast of corners in Arizona.
Should Brock make the Cards’ 53-man roster, this will be his 10th NFL season. After one-season stints with the Vikings and Broncos, he will return to the NFC West. Brock spent seven seasons with the 49ers, serving as a backup and part-time starter for Jim Harbaugh‘s teams and then becoming a full-timer during the 2015-16 seasons.
Brock will turn 31 before the season starts. His arrival in Arizona will make the Cards secondary one of the most seasoned in the league. Patrick Peterson enters his ninth season, and Robert Alford and David Amerson are heading into their seventh. The Cardinals also added fifth-year veteran Josh Shaw this offseason.
With the draft coming, it is not a lock this quintet all makes the roster. But the Cardinals, who have had issues for years filling their CB2 role, are going with a volume approach to augment this position group this offseason.
A former UDFA, Brock served as the Broncos’ No. 3 corner last season. He did not fare especially well, grading as one of Pro Football Focus’ lowest-graded corners. But he will have a chance to continue in Joseph’s system. Secondary coaches Marcus Robertson and Greg Williams also worked with Denver’s DBs last season, creating more familiarity for the newest Cardinal corner.
The Cardinals entered another offseason continuing their search for a reliable complementary cornerback to Patrick Peterson. They signed Robert Alford. But the team may still want to add pieces to its secondary.
Both Morris Claiborne and Tramaine Brock are in Arizona visiting the Cards on Monday, Ian Rapoport of NFL.com tweets. Each saw a one-year contract recently expire.
Claiborne spent the past two seasons with the Jets and has played on one-year deals for the past three seasons, having signed his first with the Cowboys in 2016. The Jets deployed the former top-10 pick as a starter in each season but appear set to move on.
The Broncos turned to Brock to fill out their previous cornerback trio, which lost Aqib Talib last offseason, with Brock stepping in as Denver’s nickel performer. The Brock-Chris Harris–Bradley Roby trio obviously was a step down from when Talib was in that mix, and Denver was not expected to make an effort to re-sign Brock. No such effort was made, and the Broncos have added Kareem Jackson and Bryce Callahan this offseason.
Brock, who graded as Pro Football Focus’ No. 98 corner last season, is entering what would be his age-31 campaign. Claiborne, 29, was one of a handful of corners to surpass 1,000 snaps last season, playing 1,002. The former No. 6 overall pick graded as PFF’s No. 75 cornerback.
In addition to Peterson and Alford, Arizona employs longtime starter David Amerson and Josh Shaw, the latter a free agency addition. Should the Cardinals add either Claiborne or Brock, they will have one of the NFL’s most experienced cornerback contingents.