In protecting the home-field edge during qualifying, the United States is no different from its regional opponents in their gamesmanship.

The Eagles gained the home-field edge with their 23-21 victory over the Phoenix Cardinals yesterday.

The 49ers wound up with a 13-2 record, the best in the league, and will have the home-field edge throughout the N.F.C. playoffs.

Will having already worked in the relentless heat help the Cardinals, giving them a home-field edge against the Cowboys and the other rugged National Football Conference East teams?

The point spread represents the home-field edge, but the Eagles may have an additional advantage because they are used to playing in cold weather.

It could give Atlanta the home-field edge if it has to play the Giants or the Dodgers in the playoffs.

But Houston eliminated the Braves in five games in their 2004 division series and has erased the Braves' home-field edge in this series.

The fans give the Packers noise and momentum and an envious home-field edge.

The Chicago Bears used their home-field edge today to gain the home-field advantage in the playoffs.

But Williams, a Yankee from 1992 through 1996, dismisses thoughts of a home-field edge for the Yankees.