Three weeks into the NFL season and we're down to five undefeated teams.
The Patriots, Ravens, Eagles, Vikings and defending champion Broncos enter Week 4 as the only teams with unblemished records.
So, we ask:
This year's unbeaten crew is surprising, as four of the five are employing different starting quarterbacks from a year ago, while the Ravens' Joe Flacco is back after tearing his ACL.
As one might expect, all five hold prime spots in this week's ESPN Power Rankings. With second-year QB Trevor Siemian at the helm, the Broncos have reclaimed the top spot, boasting wins over two playoff teams and Andrew Luck's Colts.
The Tom Brady-less Patriots have been besieged by injuries but hold down the No. 2 spot, with Brady set to return in Week 5. The Vikings lost Teddy Bridgewater and Adrian Peterson to injuries, but Sam Bradford's addition, combined with a suffocating defense, has vaulted them to No. 4. The Eagles have ridden the hot hand of rookie QB Carson Wentz to No. 7, and the Ravens round out the top 10 at No. 10.
Last year the Panthers made it to 14 wins before their first loss. We'll see if any of these five can take it that far.