5 NFL Stats to Know Through Week 6

Six weeks down and we no longer have any undefeated teams in the NFL. The Kansas City Chiefs' win streak of seven games dating back to last season came to an end as they fell to the Pittsburgh Steelers at home. And yes, that's the same Steelers team who lost by 21 points at home to the Jacksonville Jaguars just one week prior.

At the other end of the standings, the banged up New York Giants pulled off an upset over the Denver Broncos to get their first win of the season. That leaves just two winless teams, the Cleveland Browns and San Francisco 49ers, whose comeback fell just 2 points shy of tying the Washington Redskins. Both of those 0-6 teams will return home this week to get another shot at removing that zero from the front of their record.

Before we move on to Week 7, here are five stats to know -- some of which are traditional, some of which are our advanced statistics -- through the first six weeks of gridiron action.