Broncos sign Derek Wolfe to four-year extension

The Broncos have signed defensive end Derek Wolfe to a four-year extension, checking off what figured to be a top offseason priority before opening postseason play. Wolfe, 25, was a second round pick in 2012 and has been a starter when healthy since. He had 5.5 sacks and a career-best 36 tackles in 2015. John…