Report: Steelers, DeCastro finalize extension

The Steelers and Pro Bowl guard David DeCastro have agreed to terms on a six-year contract extension, the Pittsburgh Post-Gazette reported Thursday. Prior reports stated that a deal was close, and because the Steelers don’t negotiate during the season, the deal comes just before the deadline. DeCastro, a first-round pick in 2012, was a first-team…