Four weeks of the NFL season are in the books, and there are still five undefeated teams (along with four "defeated" teams). Last year there were just three at this time and none of those teams are above .500 this year (Atlanta, Arizona, and Houston). The Saints, one of this year's undefeated teams, had lost all four games at this point last year. The divisions are starting to get a bit easier to rank although half the divisions (three of the four in the AFC) have leaders chosen by tiebreakers. As always, these rankings are based on assuming all un-played games are 0-0 ties.
Starting off with the AFC, the leader in the East is easiest to determine since the Patriots have the division's best record at 4-0. Miami follows at 3-1 before we get to a tie between Buffalo and New York at 2-2. The Jets won when they faced off earlier this year, so they currently have third.
Moving onto the mess that is the AFC North: Baltimore, Cincinnati, and Cleveland are all tied at 2-2 while Pittsburgh is in the cellar at 0-4. So far, the Ravens have beaten the Browns, and the Browns have beaten the Bengals. Remembering that un-played games are assumed to be 0-0 ties, the teams head-to-head-to-head records are Baltimore 1-0-5, Cleveland 1-1-4, and Cincinnati 0-1-5 thus the current seeding is Raven, Browns, then Bengals.
Heading down South, the Colts and Titans are tied at the top at 3-1. Looking at divisional games, Indianapolis has beaten Jacksonville while Tennessee lost to Houston, so the Colts have the better divisional record and thus the top spot. Houston comes in third at 2-2, and the Jaguars are last with their 0-4 record.
The AFC West is the only division is still have two undefeated teams: Denver and Kansas City. The Broncos are the only one of the two to have played a divisional game and thus have the divisional record lead 1-0-5 to 0-0-6. San Diego is third at 2-2 followed by the 1-3 Raiders.
Ranking the divisional leaders, the Patriots and Broncos are tied at the top. New England currently has the tiebreaker edge via strength of victory: their opponents are a combined 5-11 versus 4-12 for the Broncos. Indianapolis is the #3 seed at 3-1, and Baltimore is #4 at 2-2.
As for the Wild Card, the Chiefs are #5 with the best record of 4-0 of the non-division leaders. Miami and Tennessee are tied for next best at 3-1. The Titans currently have the edge via record in common games. Here's the current AFC playoff picture:
Moving onto the NFC, the Cowboys lead the dismal East with a 2-2 record. Philadelphia and Washington are tied for second at 1-3, and since the Eagles won in their first meeting of the year, they currently are ahead. The Giants are at the bottom of the division at 0-4.
In the North, Chicago and Detroit are tied at 3-1. The Lions won their matchup against the Bears this past weekend, so they currently have the tiebreaker. The Packers are third at 1-2 (were off with a bye this past week) followed by Minnesota at the bottom at 1-3.
As for the South, the perfect 4-0 Saints lead the division. Carolina, who was off this past weekend, are second at 1-2. The 1-3 Falcons are third followed by the 0-4 Buccaneers.
Out West, the 4-0 Seahawks lead the division. Arizona and San Francisco are tied for second at 2-2. The 49ers are 1-1 in the division while the Cardinals are 0-1, and as such, the Niners currently have the tiebreaker edge. The 1-3 Rams are currently at the bottom.
Moving on to ranking the divisional leaders, New Orleans and Seattle are tied at the top. The Saints have played one more conference game than the Seahawks and thus lead in the conference record tiebreaker 3-0-9 to 2-0-10. The Lions follow as the #3 with their 3-1 record and Dallas is #4 at 2-2.
As for the Wild Card, the Bears have the best record among the non-divisional leaders at 3-1 and are the #5 seed. The next best record is a tie between San Francisco and Arizona, and the divisional tiebreaker applies, so the 49ers are currently the #6 seed. The NFC playoff picture is currently:
Looking ahead to what the picture could look like next week, the Patriots, Saints, and Seahawks are all guaranteed to be leading their divisions after Week 5. Denver is the only other team guaranteed to be in the picture: as the AFC West leader if they win or if Kansas City loses otherwise as a Wild Card.
The AFC North will be led by the Ravens if they win. If they lose, the Browns take the lead with a win. If both Baltimore and Cleveland lose, Cincinnati takes the top spot with a win. If none of those teams win, the Ravens keep the spot. Similar story in the South with the Colts winning keeping them atop the division. If they lose, the Titans move to the top with a win. If both Indianapolis and Tennessee lose, Houston can retake the divisional lead with a win.
Kansas City keeps their Wild Card spot with a win (or moves up to Denver's divisional leader spot) or losses by one of Miami or Indianapolis. Miami earns a spot with a win. Tennessee is at least a Wild Card with a win. If Miami and Indianapolis both lose, the final Wild Card spot will go to either Miami, Cincinnati, Houston, or Indianapolis based on tiebreakers.
The NFC East will be held by Dallas if they win or if Philadelphia loses. If the Cowboys lose and the Eagles win, they overtake the lead. Neither can have a wild card spot after next week. Similar story in the North with the Lions and Bears. Chicago needs to win and have Detroit lose to overtake. However either team could end up as a wild card if not the divisional leader.
The 49ers keep their wild card spot with a win. Arizona take a wild card spot with a win and losses by two of Chicago, Detroit, and San Francisco. The Panthers take a wild card spot with a win against the Cardinals and a 49ers loss. The non-divisional leader between the Bears and Lions keeps their spot with a win or losses by both Arizona and San Francisco.