Beyond the Saints, no one is stunned that the Chiefs and Bills are 2-0. Same goes for the Texans. But the rest of the league’s undefeated teams? That’s where it gets interesting.

Start with the Steelers, who named Russell Wilson their starting quarterback in late August and have since opened with a pair of victories without him. Justin Fields hasn’t been great — it’s T.J. Watt and the defense that’s carrying this team right now — but no matter: this is Pittsburgh’s best start in four years. With the Steelers atop the AFC North, it’s getting tougher to see them making a change at QB whenever Wilson is healthy.

The Vikings have opened with two straight victories without their rookie first-round QB; in this instance, J.J. McCarthy is out for the season. Minnesota’s 23-17 upset of the 49ers on Sunday speaks to the potential Sam Darnold has had since he entered the league as the third pick in 2018, not to mention the job Kevin O’Connell has done keeping the Vikings competitive. Darnold’s bomb to Justin Jefferson for a 97-yard touchdown was one of the best plays of the week.

The Bucs were almost eight-point underdogs heading into Sunday’s game in Detroit and left with a 20-16 victory in a rematch of last year’s divisional playoff game. Tampa Bay has started 2-0 in all three seasons under Todd Bowles.

Jim Harbaugh said something noteworthy last spring, vowing that in a league dominated by quarterbacks, receivers and pass-catching tight ends, his Chargers still viewed offensive linemen as “weapons.” Two games in and the Chargers look remade, a reflection of Harbaugh’s old-school football DNA. After Sunday’s easy 26-3 win over the Panthers, Harbaugh’s team is 2-0 for the first time in 12 years. The dominance up front has been the difference: running back J.K. Dobbins, the chief benefactor so far, has run for 266 yards and two touchdowns. He’s the first Charger to have back-to-back 100-yard rushing games in eight years.

Before Sunday, no coach in Seahawks history — no, not even Mike Holmgren or Pete Carroll — began their career 2-0. Mike Macdonald is the first after Seattle outlasted the Patriots 23-20 in overtime. Geno Smith made some terrific throws on his way to a 327-yard passing day and led two drives late that ended in field goals to spoil Jerrod Mayo’s bid to start his own career in New England 2-0.