Panthers' offense shows promise, defense needs work

While the Carolina Panthers' offense showed promise in the team's 34-30 season-opening lossto the Las Vegas Raiders, its young, inexperienced defense clearly has some work to do.The Panthers, who started three rookies on defense, allowed the Raiders to score on six of their first eight possessions — including three touchdowns — and failed to register a sack against Derek Carr.Carolina managed just five quarterback pressures and Carr was barely touched all afternoon.