NFL playoff picture in Week 2 - why 0-1 Carolina holds the NFC's fourth seed

Carolina has not won a game and holds the fourth seed in the NFC. The Panthers are 0-1 and have been outscored by 22 points, the worst margin of any team in their division. They are fourth in the conference anyway. That is not a projection or a forecast. It is what the league's seeding rules return when all four teams in a division are 0-1 and one of them still has to win it.

Every number below is computed from results through Friday, September 18. That is all of Week 1 plus a single Week 2 game. Only two clubs have played twice: Buffalo, which won both, and Detroit, which split. Nothing else from Week 2 is in these numbers, and nothing below should be read as if it were.

New Orleans, Tampa Bay, Atlanta and Carolina are all 0-1, and the division will still send a winner to the playoffs. That guarantee is visible in the arithmetic. All four carry a tragic number of 16 with 16 games remaining. Every other 0-1 club in the NFC, meaning Washington, Dallas, Green Bay and the Rams, carries 15. One extra loss of room, handed out by structure rather than earned on the field. The order inside the division is not coming from points either. New Orleans is minus 1, Tampa Bay minus 6, Atlanta minus 7, Carolina minus 22, and it is Carolina in front.

The AFC North shows the same machinery from the other side. Baltimore, Pittsburgh and Cincinnati are all 1-0. Baltimore is the second seed in the conference. Cincinnati is seventh, inside the seven-team field. Pittsburgh is eighth, outside it. Points do not account for the gap: Baltimore is plus 18, Pittsburgh plus 7, Cincinnati plus 6, so of the two teams on the bubble the one with the better margin is the one on the wrong side of the line. After a single game each, the tiebreakers separating them are running on almost no input.

Order the AFC by winning percentage and the top eight is one undifferentiated block at 1.000: Jacksonville, Kansas City, Baltimore, Buffalo, Las Vegas, the Jets, Pittsburgh, Cincinnati. The sequence inside that block carries no information. Apply the league's seeding rules to the same eight teams and it comes out Buffalo, Baltimore, Jacksonville, Kansas City, Las Vegas, the Jets, Cincinnati, Pittsburgh. In the NFC the two lists do not even contain the same clubs. The record-ordered top eight is the seven unbeaten teams plus 1-1 Detroit; the league's top eight includes 0-1 Carolina and drops Detroit to ninth. New England and New Orleans make the point in miniature: each is ninth in its conference on record and sixteenth by seeding. Chicago scored 59 points in its only game and is the NFC's fifth seed. Minnesota scored 39 and is the first.

There is exactly one clinch number in the league. It belongs to Jacksonville, and it is 16 against 16 games remaining. Its division clinch number is also 16. Read that plainly: the AFC South leader would have to win every game it has left to be guaranteed a postseason place if every rival won out. A number equal to the entire remaining schedule is not an achievement and does not mean Jacksonville is close to anything. It is what the arithmetic returns when one result is all it has to work with, and it will disappear the moment a rival loses. No other club in either conference carries a clinch number at all. Buffalo, at 2-0 the only team in football with more than one win, carries neither a clinch number nor a tragic number.

The tragic numbers are just as empty, and correctly so. Every 1-0 club except Jacksonville sits at 16, which is its entire remaining schedule; the Jaguars carry no tragic number at all, only the clinch number above. Every 0-1 club outside the NFC South sits at 15, which is its remaining schedule minus one. In other words, no team in the NFL can be eliminated right now by anything short of losing essentially everything in front of it. Fifteen of the 32 clubs have not lost a game. Sixteen have not won one. One, Detroit, is 1-1. A table built on that cannot yet tell you who is good.

What to watch. Six of the eight divisions are led on tiebreakers rather than record: the AFC North, the AFC West, and all four leaders in the NFC. Only Buffalo and Jacksonville lead on wins. The first thing the rest of Week 2 does is give most clubs a second data point, and second data points are what tiebreakers feed on, because conference record, division record and common games all start as empty sets. Three structural questions are worth tracking. Whether the NFC South produces a team above .500 at all, or keeps handing a top-four seed to a losing club. Whether the AFC North stays a three-way tie, because while it does, a team with the same record as the second seed will keep sitting outside the field. And whether Buffalo's head start turns into separation. At 2-0 with 15 to play, Buffalo is one of the two clubs whose division lead is made of wins rather than of a tiebreak, and the only one holding that lead with two of them. Clinch and tragic numbers stay decorative until records spread out, which in a 17-game season means around the sixth week, not the second.

How to read these numbers. A clinch number, also called a magic number, is the minimum additional wins that guarantee a place even if every rival wins every game it has left. A tragic number is the additional losses after which the place becomes impossible even if the team wins every game it has left. Zero means it is already done; no number at all means the arithmetic cannot yet say. Ties are counted against the team in question, so our clinch can trail an official announcement by a day. The conference tables are on the standings page, every club's clinch and tragic number is on the magic numbers page, the seeding and tiebreaker order is on the playoff page, the fixture list is on the schedule page, and the calculation itself is written out on the methodology page. Each club also has its own page, and is the one to start with this week.