Robinson signed a contract with the Redskins on Saturday, ESPN's Adam Schefter reports.
Robinson was waived by the Panthers on Tuesday, Jourdan Rodrigue of The Charlotte Observer reports.
Robinson (foot) is not listed on the Panthers' initial injury report Tuesday, Bryan Strickland of the Panthers' official site reports.
Robinson (foot) was traded to the Panthers on Saturday in exchange for a draft pick, Ian Rapoport of NFL Network reports.
Robinson sustained a foot injury in Thursday's preseason game against the Browns, Kyle Meinke of MLive.com reports.
Robinson (foot) is listed as active for Sunday's game against the Buccaneers.
Robinson (foot) was activated off injured reserve by the Lions on Saturday, Tim Twentyman of the Lions' official site reports.
Robinson (foot) returned to practice Wednesday, although he's still on injured reserve, Tim Twentyman of the Lions' official site reports.
The Lions placed Robinson (foot) on injured reserve Tuesday, the Lions' official site reports.
Robinson (foot) will be inactive for the Lions' Week 1 matchup against the Cardinals.