The true identity of NFL teams is starting to appear.
It seems like the NFL season just started, and the replacement refs were nothing but a slight fear, but most squads are now a quarter of the way through their schedule and those fake zebras have been vanquished like a bad cold.
And as a result, we are starting to learn more and more about each team. Let's take a look at what we know about those who chalked up impressive wins in Week 4.
Note: For a complete look at all Week 4 scores, check out ESPN.com.
Philadelphia Eagles (Beat New York Giants, 19-17)
Why it's impressive: Scrappy win against a hot Giants team
What we learned: The more LeSean McCoy, the better
LeSean McCoy had two rushing yards in the first half. He had 121 in the second.
I'm not sure what happened at halftime, whether someone gave Andy Reid a hug, whether he took a much-needed nap or what, but it needs to happen more often.
Because LeSean McCoy is easily one of the best running backs in this league, and without a doubt, the most shiftiest, dynamic back.
Not only is the ball being in his hands the best thing possible, as his five yards per carry would suggest, but the fewer plays Michael Vick has to make and the fewer hits Michael Vick has to take, the better.
That was clear on Sunday night, as the Eagles offense moved much more swiftly in the second half.
Arizona Cardinals (Beat Miami Dolphins, 24-21)
Why it's impressive: Overtime win in which their best weapon (defense) was far from effective
What we learned: The Cardinals are a legitimate playoff contender
I know what you're thinking. "An overtime win against a mediocre Miami Dolphins team and now you're convinced the Cards are a playoff team?"
Well, imaginary person, hear me out. Arizona's first three wins over the Seahawks, Patriots (on the road) and Eagles were obviously impressive, but they came via near-perfect defensive performances from Arizona.
Now that we know Kevin Kolb and Arizona's not-so-sexy offense can win a game when the defense doesn't play up to its ability, we know this is a team to take seriously.
New England Patriots (Beat Buffalo Bills, 52-28)
Why it's impressive: 52 points, including 35 in a row after falling behind big on the road
What we learned: The Patriots are a legitimate Super Bowl contender
A lot of people have strayed away from the Patriots bandwagon as of late, but those same people seem to forget that they are two last-second field goals away from being 4-0.
Sunday's domination of the Buffalo Bills wasn't just a reminder that Tom Brady and his endless receiving weapons can be unstoppable, even when pushed against the wall.
It wasn't just a reminder that the Patriots can run the ball now, too. Brandon Bolden and Stevan Ridley combined for 243 yards on 38 carries.
It wasn't just a reminder that they can stop the run now, too. C.J. Spiller, who had been so good through three weeks, and Fred Jackson combined for 62 yards on 21 carries.
OK, it was just those things, but that's a lot of things.