Carolina Panthers wide receiver Kelvin Benjamin returned to practice Friday and is listed as questionable for Sunday's game at Green Bay. Benjamin missed the past two practices going through the league's concussion protocol, which he remains under. Coach Ron Rivera said the 28th pick in the 2014 draft "went through everything" in Friday's non-contact practice. "He looked good on the field," Rivera said. "He practiced well. He was sharp. I really don't think he had a [mental error]. He took a lot of reps today, which I understand is part of protocol." Read more http://espn.go.com/nfl/story/_/id/1...amin-concussion-practices-questionable-sunday