ATLANTA -- Tight end Vernon Davis spoke up at halftime.
And for one of the few times this season, his actions on the field spoke loudly, too.
In the postseason a year ago, it was the Vernon Davis Show.
To a man, Green Bay believes its defense in particular, its team in general, is, well, different than the unit that was pretty much used by the 49ers in the season opener.
This is the first part in a series that spotlights five 49ers-Packers matchups to watch Saturday, 5 p.m., at Candlestick Park.