These are the times when Aaron Rodgers has to carry the Green Bay Packers. He has done it in the past, just like Brett Favre did before him. And like Tom Brady has for the better part of two decades with the New England Patriots. The Packers are in a bad run of injuries going into Sunday’s home game against Cincinnati. It’s hardly unprecedented in the NFL, and they’re not alone in their problems. The Philadelphia Eagles, for instance, probably will be without three starting defensive backs Sunday against the New York Giants. But Brady drove home an NFL truism last year, that most players — even Pro Bowl players — aren’t indispensable in today’s game. He and the Patriots won the Super Bowl even after losing tight end Rob Gronkowski halfway through last season.