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Through one fourth of the season only two teams in the NFL have allowed exactly as many points as they have given up.
Point differential in their four games thus far: zero.
Those two teams, the Washington Redskins and the Cincinnati Bengals, boast aggressive offensive attacks and developing defenses that keep them in most games.
The Redskins two wins came by a combined 10 points, their two losses, by—you guessed it—a combined 10 points.
The Bengals have surprised this year, with a staunch defense, and improved play by quarterback Andy Dalton.
They are unpredictable, a bit edgy and a lot of fun to watch. And, well, they're the Bengals, so even when everything is going their way, their fans are waiting for the bottom to fall out.
That, by itself, is enough to keep your heart pumping.