AFC Notes: Kirk Cousins Thrives with Raiders, Mahomes-Walker Duo, Chargers’ Struggles

Chargers Chargers HC Jim Harbaugh on QB Justin Herbert and Los Angeles’ early struggles at 0-2: “I wouldn’t change a thing about Justin.” (Kris Rhim) Chiefs Chiefs QB Patrick Mahomes is enjoying his first season with RB Kenneth Walker in the backfield, given that Walker is leading the league in rushing yards through two weeks of the season. Walker shared Mahomes’ sentiment about having fun seeing what the other can do on game day. “It’s fun for me,” Mahomes said, via Nate Taylor of ESPN. “Him running the ball and our offensive line driving off the ball the way they’re…