NFL training camps just opened. A couple of changes from last year: Our friend Lennie Friedman has retired. Defensive end Igor Olshansky left his original team, the San Diego Chargers, opting for free agency. He signed a four-year contract with the Dallas Cowboys in March for an estimated $18 million, with $8 million of it guaranteed. QB Sage Rosenfels begins his first season with the Minnesota Vikings, where he will compete for the first string role with Tarvaris Jackson.