'Who is Friggin' Tougher than Charles Woodson?'

On a rainy early evening four days before Christmas, Charles Woodson, 39, sat down in the media room at the Raiders practice facility and told about a dozen Bay Area reporters Monday that he was retiring. “Thursday's my last home game,” he said, with 

Green Bay Packers wide receiver James Jones (89) catches a touchdown pass next to Oakland Raiders free safety Charles Woodson (24) during the second half of an NFL football game, Sunday, Dec. 20, 2015, in Oakland, Calif. Ryan Kang AP Photo.

Green Bay Packers wide receiver James Jones (89) catches a touchdown pass next to Oakland Raiders free safety Charles Woodson (24) during the second half of an NFL football game, Sunday, Dec. 20, 2015, in Oakland, Calif. Ryan Kang AP Photo.

And the one who taught him how to do that was his former teammate — and Sunday's foe with the Oakland Raiders — Charles Woodson. Every day, Shields sprints for 100 yards. And then he does it again. And again. Then he hits the stairs, taking those two 

Charles Woodson has built up the accolades over the course of his long career. He is the only primarily defensive player to win the Heisman Trophy. He was a shutdown corner after being a first-round draft pick by the Oakland Raiders. He was the 2009