CHARLOTTE – The Panthers have filled the opening on their 90-man roster with Aldrick Robinson, an unrestricted free agent with a track record as a reliable complementary receiver.

"They want to stretch the field. They want me to add to that. They like my speed and my ability to open things up," Robinson said. "I can create separation and get by defenders."

Robinson, who has 86 career receptions for 1,422 yards and 14 touchdowns, signed a one-year contract. The 5-foot-10, 185-pounder scored five touchdowns last season for the Vikings, the fourth team he's scored for since the Redskins selected him in the sixth round of the 2011 NFL Draft.

"My career has been a grind," Robinson said. "I've always had to prove myself everywhere I've been. I'm OK with that."

A speedster out of SMU, Robinson spent his rookie year on Washington's practice squad but has played in at least 14 games in five of the seven seasons since. He played just five games for Washington in 2014 and was out of football in 2015, but every other year since 2012 he's scored at least two touchdowns despite catching no more than 20 passes in any season.