Samuel's ankle a concern for Panthers

CHARLOTTE, N.C. — The Panthers will be looking for a new starting wide receiver heading into the bye week.

Panthers rookie Curtis Samuel will undergo an MRI after injuring his left ankle in Carolina's 45-21 win over the Miami Dolphins on Monday night. Panthers coach Ron Rivera said Tuesday trainers were "not very optimistic" about Samuel's prognosis after he hobbled off the field in the third quarter and did not return.

Samuel replaced traded Kelvin Benjamin in the starting lineup two weeks ago, giving the team more speed. Carolina's offense has excelled since then, racking up franchise record 548 yards against Miami.

Russell Shepard would likely replace Samuel if he is sidelined. Rivera is confident tight end Greg Olsen will return from injured reserve and play against the Jets on Nov. 26.

Jaguars place Overton on IR

JACKSONVILLE, Fla. — The Jacksonville Jaguars have placed a second long-snapper on injured reserve.

The team put veteran Matt Overton on IR and signed free agent Colin Holba to fill his spot on the 53-man roster Tuesday. Holba will make his NFL debut Sunday at Cleveland.

Overton injured his right shoulder against the Los Angeles Chargers on Sunday. He joins Carson Tinker on IR. Tinker tore a ligament in his right knee in August and had season-ending surgery.

Holba was a sixth-round draft pick by Pittsburgh in April. The Steelers released him in final roster cuts in September.

Cleveland's Collins suffers knee injury

CLEVELAND — Browns linebacker Jamie Collins has been placed on injured reserve after suffering a season-ending knee injury.

Collins tore the MCL in his right knee while returning an interception in the first quarter of Sunday's loss to the Detroit Lions. The 27-year-old former Pro Bowler is one of the Browns' best players and they'll have to try to get their first win without him.

Collins signed a four-year, $50 million contract extension with Cleveland during the offseason. However, he played in only six games this year, missing three games with a concussion before hurting his knee.

James Burgess will replace Collins in the starting lineup. Collins finished with 31 tackles, a forced fumble and a pick of Lions quarterback Matthew Stafford.

Collins is a captain and highly regarded by Cleveland's players. Browns rookie quarterback DeShone Kizer called him "an ultimate leader."

(Photo by John Locher, AP) Oakland Raiders President Marc Badain speaks during a ceremonial groundbreaking for the Oakland Raiders' stadium Monday.

(Photo by Mike McCarn, AP) Carolina Panthers wide receiver Curtis Samuel is helped off the field after injury against the Miami Dolphins in the second half of Monday's game.