Eagles vs. Cowboys highlights tight NFL division races

The NFC East hasn't had a back-to-back champion since the Philadelphia Eagles won four straight from 2001 to '04, and Sunday's showdown in Dallas could go a long way in determining whether that trend will continue. The Cowboys are favored by 3.5 points against the Eagles, who enter with a one-gamedivision lead.

They're one of three division leaders with such a slim margin heading into the final five games of the regular season.

The Atlanta Falcons host the Tampa Bay Buccaneers on Sunday with a one-game lead atop the NFC South.

And the Jacksonville Jaguars, who lead the Indianapolis Colts and Houston Texans by a game in the AFC South, have a tough road matchup against the Cleveland Browns, especially after Jaguars quarterback Trevor Lawrence suffered a right high ankle sprain in Monday's loss to theCincinnati Bengals.

Here is a look at seven of the eight division races, with ESPN's Football Power Index (FPI)calculating chances of winning the division and the remaining strength of schedule (the lower the number, the harder the schedule). NFL Nation reporters provide reasons why the team they cover can win the division.

Since the San Francisco 49ers have a 99.2% chance of winning the NFC West, that division is not included.

Note: If teams finish the season tied atop the division, the top tiebreakers -- in order -- are: head-to-head results, division results, common opponents, conference results.

Slimmest of leads

NFC South

Atlanta Falcons

Chance to win division: 57.7%