Green Bay - Think back to the last five Super Bowl champions: the New York Giants again, Green Bay, New Orleans, Pittsburgh and the Giants. Besides exceptional quarterbacking, all five of those teams could run the football and stop the run. New Orleans' run defense was iffy, but at least Gregg Williams' unit could get after you. On Sunday, two of what should be premier teams in the National Football League met in a pressurized opener on a glorious 72-degree late afternoon at Lambeau Field. Five days earlier, coach Mike McCarthy said he expected the more physical team to have the most success. It was the main reason the San Francisco 49ers beat his Packers, 30-22, in a matchup of stunning contrasts. "It was a tough start to our regular season," said McCarthy, a loser on opening day for the first time since 2006. "We lost to a very good football team."