The Chargers embracing an opposite approach in play-calling — moving away from a run-heavy philosophy — left many bemused during their season-opening win over the Kansas City Chiefs in Brazil.

Justin Herbert was given free rein to showcase his arm, firing pass after pass against the defending AFC champions. This approach hinged on trust; not necessarily in Herbert’s ability, but in his receivers’ capabilities.

“It’s all about having a clear mind and trust,” Quentin Johnston said. “Trusting the play call, and then trusting yourself to get open. Trusting Justin that the ball will be in the right place when you get open.”

A byproduct of learning a new system last year, with young receivers thrust into pivotal roles, Herbert and his wideouts looked out of sync at times, whether from a lack of trust, chemistry or rhythm.

With Week 1 as a litmus test, the dynamic looked much improved, thanks to another year of bonding with Johnston and Ladd McConkey and the added reliability of a returning Keenan Allen.

“We were all really close last year and bonded well, so this is just a continuation,” McConkey said. “We know the offense. We have a year under our belt with it, and now we can play more freely, be ourselves.”

A group of “regular guys,” as McConkey puts it, the bond has only grown stronger as the connection off the field has grown through beach volleyball sets, casual board game sessions and rounds of golf.

“Everybody comes in with a positive attitude,” Johnston said. “Never a dull moment with us. Always in the meeting room, just bouncing ideas off each other. I’m having fun on the field, between plays, cracking jokes.”

Chargers wide receiver Keenan Allen, right, celebrates with Ladd McConkey, center, and Quentin Johnston after making a touchdown catch against the Chiefs on Sept. 5.

(Buda Mendes / Getty Images)

That camaraderie has been most vivid in times of adversity.

As a rookie in 2023, Johnston was a lightning rod for ridicule on social media for his inconsistent performances — particularly drops — with many expecting more from a former first-round pick.

But after making two touchdown catches in the best prime-time performance of his three-year career in Brazil, Johnston was showered with positivity.

Herbert called Johnston a “special player” and would continue to “find ways to get him the ball, because good things happen.” McConkey added that “there’s nobody better” when Johnston is playing with confidence.

“First thing that jumps into my mind is, ‘In your face,’” said coach Jim Harbaugh, referring to Johnston’s critics. “If I were Quentin, that’s what I’d be saying, so allow me to say it for him.”

Chargers wide receiver Quentin Johnston (1) celebrates with Ladd McConkey (15) and Omarion Hampton after scoring a touchdown against the Chiefs on Sept. 5.

(Buda Mendes / Getty Images)

For Johnston, support from Harbaugh and his teammates means everything to him.

“These are the guys I come to work with, and go to war with every day. So to have the main dude on the team just be there, always uplift me, it feels good.”

With Johnston, McConkey and Allen, Herbert has a formidable arsenal. The trio were targeted on 26 of his 34 pass attempts and they combined for 221 yards and three touchdowns on 20 receptions.

“Those guys, especially on third down, they came in clutch,” Herbert said. “To have Q, Ladd, Keenan, those guys make plays on third down. It’s only going to help our offense.”

When the Chargers needed an opening-drive score, Johnston hauled in a pass in the back of the end zone. With the offense looking to extend the lead before the half, McConkey made an acrobatic first-down catch. And when they needed to sustain a crucial fourth-quarter drive, Allen picked up just enough yardage to keep it alive after just scoring one of his own.

All on third down.

For Allen, clutch execution has become expected, even at 33. All-Pro safety Derwin James Jr. coined the phrase “Third and Keenan,” a standout soundbite from James’ mic’d-up audio during the game.

“I was trying to express to them [the young guys] what it means having a guy like that,” James said.

From what James saw during the opener, the phrase could extend beyond Allen: “It can be ‘Third and Ladd too.’ You want to double Keenan, Ladd’s gonna do the same thing.”

With a decade more experience than the next-longest-tenured wideout, Allen has been a well of knowledge.

“He’s made a big difference,” Johnston said. “He’s a Chargers legend. So, having a guy like that to look up to and bounce ideas off is always good.”

As the group continues to feed off each other, Allen gave high praise to what could be his final receiving corps.

“I’ve been in some solid receiver rooms — this one’s right up there,” Allen said.