Former NFL receiver Mike Williams -- the Offensive Rookie of the Year runner-up in 2010 -- has died following a recent accident at a construction site.
According to a GoFundMe page set up by Williams' family, the ex-Tampa Bay Buccaneers wideout suffered a "massive head injury" a few days ago when a steel beam fell on him ... causing "complete paralysis in his right arm as well as his lower body from the waist down."
Sadly, Williams' family says his condition worsened in the ensuing days .