As they enter the fourth quarter of the NFL season, the NFC North Division champion Green Bay Packers are undefeated and looking for win No. 13 Sunday against the Oakland Raiders.

The Packers have three of their final four games at their increasingly chilly home, and the only road game is in Kansas City, which should not be any more tropical than Green Bay.

"The biggest emphasis as a football team is a focus on the basics," Packers coach Mike McCarthy said Wednesday. "We're playing winter football now. We play four games here, all in winter conditions. Three of them are on Lambeau Field."

The coach took his team outside Wednesday for a practice in the 20-degree weather.

"The cold is always difficult and when the wind picks up that makes it tough, too," Packers punter Tim Masthay said. "The goal is to continue to be productive. Last year we had success when it was windy and cold, too."

The Packers' offense has been playing lights out all season. The team leads the NFL in scoring, and quarterback Aaron Rodgers has been unstoppable. Still, the offense could get cold along with the weather. It gets harder to throw and catch, the colder it gets.

Any drop in offensive production for the Packers could make things difficult. Just last week, the Packers needed a last-second field goal to secure a win after the defense allowed 35 points to the New York Giants.

According to McCarthy, the defense is 7 percent off its production from last season.

"We averaged 66.3 plays a game,” McCarthy explained. "Seven percent of that is 4.4-4.5 plays a game. We’re looking at five plays a game that we need to win as opposed to lose, and then you break it down into areas that are emphasized as far as the negative plays, and it’s big plays."

The big plays have hurt a Packers defense that is second in turnovers and leads the league in interceptions, dropping the group from a top-five defense a season ago to an average to bad defense this season. The Packers rank 31st in the league for yard allowed per game.

Much like dealing with the weather, McCarthy is focused on the basics.

"We'll make adjustments," McCarthy said. "I'm fully confident that we're going to play championship defense down the stretch here."

Rodgers agrees.

"I just think we need to be playing a certain way,” Rodgers said. “If you look at last season, the way we finished up, we got hot at the right time and carried that into the playoffs ... I know (the defense) would like to improve a little bit and maybe not give up so many points. They're doing a great job."

Outside linebacker Clay Matthews thinks the defense is working, but admits there are things that can be fixed.

"Obviously we need to stop the big plays, stop the run and get to the quarterback,” Matthews said. "It's an all-around deal. But I think we can do that. And that’s what's encouraging."

As for the weather, Matthews thinks the best team is still going to win.

"Statistics have shown and studies have shown, that (playing in the cold) does effect the body,” Matthews said. "But fortunately for us, we do play in this weather. It's definitely a good change of pace from California. So, we may have a heads up in that aspect. At the end of the day, it really comes down to football and I think the better team will win despite the weather."

Packers fans should hope he's right.

The Packers have been, so far, the best team in every game this season.

With the Packers up 49-17, backup quarterback Matt Flynn took over for Rodgers.

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-- GERRARD DIAZ
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