The Arizona Cardinals are 5-1 for the first time in 38 years. After a victory at winless Oakland, the team sits alone atop the NFC West, with a two-game cushion in the loss column over San Francisco and Seattle.
Now the road gets a whole lot tougher.
There are three other one-loss teams in the NFL, and Arizona plays two of them the next two weeks. First up is a home game Sunday against the Philadelphia Eagles.
Arizona won nine of its last 11 games last season, so that makes them 12-3 over the last 15 games. The Cardinals haven't won 12 in a 15-game span since 1975-76. The 12-3 record is tied with Philadelphia, Denver and New England for the best in the NFL over the last 15 games.
But there remains a belief on the team that the Cardinals have yet to put together a complete game. The win in Oakland might have been the closest to it yet.
After the Raiders managed just 56 yards on the ground, the Cardinals rank first in the league in run defense, a fact that will be severely tested by Philadelphia's LeSean McCoy.
McCoy, coming off his finest game of the season a 149-yard effort in a 27-0 win over the New York Giants, faces an Arizona Cardinals' defense that has allowed an average of just 72 yards rushing per game when the Eagles visit Arizona on Sunday.
"I'm sure they're going to try to take the run away," McCoy said. "What's so impressive about that defense is the way they utilize players. They have some guys out, and other guys just step up and play. They're fast. They're physical. They're a good defense."