Lions Release CB Marcus Cooper
The Lions announced that cornerback Marcus Cooper has been released. To take his place, the club has signed fellow CB Jamar Summers. 
Cooper arrived in Detroit via waiver claim in November and re-signed with the team in March. He didn’t play much with the Bears early on in 2018, but he did suit up for four games with the Lions. The 29-year-old defender has made 28 starts in a six-season career, having intercepted seven passes. All of those picks came during his two most prominent years as a corner — 2013 in Kansas City and 2016 in Arizona.
Summers, meanwhile, was in the now-defunct AAF before a short stint with the Dolphins. He’ll now push to make the Lions’ 53-man cut.
Dolphins Sign Mark Walton
The Dolphins auditioned running back Mark Walton several days ago, and they apparently liked what they saw. Per Cameron Wolfe of ESPN.com (via Twitter), Miami has given Walton a contract.
The Bengals cut Walton in April after he was arrested for the third time in three months. But Cincinnati used a fourth-round pick on Walton in 2018, so even if he faces a suspension of some sort for his legal troubles, the rebuilding Dolphins — who don’t need Walton to contribute right away — may have found good value.
Assuming Walton sticks around, he should have an opportunity to carve out a role in Miami’s backfield along with Kenyan Drake and Kalen Ballage. He tallied just 34 yards off of 14 carries as a rookie, but he rattled off 1,100 yards and scored 14 TDs as a sophomore with the Hurricanes, which offers a glimpse of his potential.
In addition to Walton, the Dolphins have also signed fellow tryout players CB Jamar Summers and C Kirk Barron.
Steelers Cut QB Landry Jones, Others
The Steelers have reached the 53-man roster limit by cutting a number of players, including quarterback Landry Jones.
Jones, 29, hasn’t played much during his six-year NFL career, as he’s attempted just 169 passes in relief of Roethlisberger. In that span, Jones has been a middling option, completing 63.9% of his passes for 1,310 yards, eight touchdowns, and seven interceptions.
The Steelers also placed wide receiver Eli Rogers on the Reserve/PUP List, which will keep him off of the field for at least the first six weeks of the season.
Here’s the full rundown of the Steelers’ moves:
Released:
- QB Landry Jones
- S Nat Berhe
Waived:
- P Matt Wile
- RB Jarvion Franklin
- RB James Summers
- RB Fitzgerald Toussaint
- WR Trey Griffey
- WR Quadree Henderson
- WR Tevin Jones
- TE Bucky Hodges
- TE Pharoah McKever
- TE Christian Scotland-Williamson
- OL Larson Graham
- OL Patrick Morris
- OL Oni Omoile
- OL R.J. Prince
- OL Jake Rodgers
- OL Chris Schleuger
- CB Brian Allen
- CB Dashaun Phillips
- CB Malik Reaves
- CB Jamar Summers
- LB Keion Adams
- LB Matt Galambos
- LB Farrington Huguenin
- DL Parker Cothren
- DL Joshua Frazier
- DL Greg Gilmore
- DL Lavon Hooks
- DL Casey Sayles
- DL Kendal Vickers
In addition to those moves, the Steelers designated the following players waived/injured:
- WR Damoun Patterson
- WR Marcus Tucker
- OL Joseph Cheek
- S Malik Golden
- LB Keith Kelsey
Steelers, 13 UDFAs Agree To Terms
The Steelers are now the second club to announce their crop of 2018 undrafted college free agents:
- Olasunkanmi Adeniyi, LB (Toledo)
- Parker Cothren, DT (Penn State)
- Jarvion Franklin, RB (Western Michigan)
- Greg Gilmore, DE (LSU)
- Quadree Henderson, WR (Pittsburgh)
- Trey Johnson, CB (Villanova)
- Pharoah McKever, TE (North Carolina State)
- Patrick Morris, C (TCU)
- Ikenna Nwokeji, OL (Elon)
- Chris Schleuger, G (UAB)
- Jamar Summers , CB (UCONN)
- Matthew Thomas, LB (Florida State)
- Kendal Vickers, DE (Tennessee)