VIDEO: Packers' Jamaal Williams Knocked Out Cold by Scary Helmet to Helmet Hit by Derek Barnett

This is the absolute last thing you'd ever want to see on an NFL field. Early in the Packers' home date against the Eagles on Thursday Night Football, running back Jamaal Williams brought in a pass from Aaron Rodgers and was hit after a short gain. But as the play was blown dead, Philadelphia's Derek Barnett flew in with an inexcusable late hit that sent him helmet-first right into Williams' head.

In a truly scary scene, Williams appeared to be knocked out. He was removed on a stretcher, and Barnett was seen saying something to him as he began to be removed from the field.

Best wishes are with Williams after this rough moment.