With the Washington Commanders beating the Chicago Bears on Thursday, the NFC East improved to a league-leading 15-6 on the year.
The 2-4 Commanders are joined by three of the NFL's six teams with four wins or more, including the 5-0 Philadelphia Eagles – the only remaining unbeaten outfit.
Pre-season excitement centred on the AFC West and its potential to dominate the NFL, but the NFC East has instead surprisingly come to the fore, tallying five more wins through five weeks.
Of the six defeats for its four teams, three have been against division rivals.
There is therefore great anticipation for the fourth such matchup of the season on Sunday, when the Eagles play the Dallas Cowboys at Lincoln Financial Field.
With the Kansas City Chiefs also facing the Buffalo Bills, there is a compelling case to be made for fans this week getting to watch games between the best two teams in the NFC and the best two teams in the AFC.
Of course, the neutral may prefer to focus on the AFC tussle, where two of the leading quarterbacks in the sport will renew a rivalry last seen in their playoff epic.
But the supporting casts of the Eagles and the Cowboys might make them equally credible candidates as the league's best team come Monday.
It is certainly difficult to argue against the Eagles' start.
Their 5-0 record is their best since kicking off 7-0 in 2004; in fact, that was the last time any NFC East team won more than five games straight at the start of the year. The Eagles have already matched the 2009 New York Giants – the previous most recent example of a 5-0 start.
Outside the NFC East, such streaks have been far more commonplace. There has been at least one 5-0 team in every season since 2015, when there were six, including Super Bowl 50 champions the Denver Broncos.
That the 2015 Broncos were the last team to start 5-0 and then win the title suggests these stretches do not always mean a great deal in the long term, however.
Perhaps then the Eagles would be better served getting the first defeat out the way now, although that would mean losing control of this suddenly fiercely competitive division.
Either way, the Cowboys represent a far more serious threat than their opponents through Week 5.
The Eagles so far rank second in total offense – their 419.8 net yards per game topping the 2021 Cowboys' league-leading 407.0 – but have played defenses ranking 31st, 24th, 19th, ninth and 18th. The Dallas defense ranks seventh, and they have held each of their first five opponents to under 20 points for the first time since 1972.
As Stats Perform's efficiency versus expected model (EVE) ranks the Eagles' offense fourth and the Cowboys' defense fourth, it is clear where this game will be won and lost.
Previously, the Cowboys have had the tools to outgun their NFC East rivals. They have won their last three games against the Eagles by 20, 20 and 25 points – only once before (also versus the Eagles in the 1960s) winning four in a row by 20-plus points against any one team.
This time, with quarterback Dak Prescott still out, the Cowboys will instead focus on capitalising on the Eagles' own injury issues on their offensive line, where there are concerns around center Jason Kelce, tackle Jordan Mailata and guards Landon Dickerson and Isaac Seumalo.
Another big game from six-sack, second-year sensation Micah Parsons could be pivotal.
If the Eagles can negotiate that threat, though, a two-game lead even in this division might be enough to start planning for the playoffs now, given their schedule.
After the Cowboys, the Eagles have a bye week before playing teams ranking 32nd, 30th, 27th, 11th, 16th, 31st, 19th and 24th by overall EVE ahead of facing Dallas again in Week 16.
The NFC East's record winning start belongs to the 1991 Washington team, and the Eagles for now remain a way off the 11-0 sequence that preceded a Super Bowl triumph in a period of domination for this division.
But victory against the Cowboys would at least mean clearing the most significant hurdle in this young team's path.