AP photo by Darron Cummings / Red Bull driver Max Verstappen, right, and Mercedes driver Lewis Hamilton bump bottles after Sunday's U.S. Grand Prix at the Circuit of the Americas in Austin, Texas. Verstappen won and Hamilton was second, allowing the Red Bull driver to double his lead over Hamilton in the Formula One season championship standings.

AUSTIN, Texas — If there ever was a time for Max Verstappen to flinch in this riveting Formula One championship battle with Lewis Hamilton, it would have been Sunday in the closing laps of the U.S. Grand Prix.

The young Dutchman seeking his first series title was being chased by the seven-time champion, and Hamilton was rapidly closing in on the lead under the hot Texas sun at the Circuit of the Americas.

The intensity of the tightest championship duel in years might have derailed a different driver — especially when Hamilton pulled within a second on the final lap — but Verstappen thrived and won for the eighth time this season.

"It was exciting, the pressure was on, not knowing how quick Lewis was going to get you," Verstappen said. "We managed to hang on at the end."

The victory doubled Verstappen's lead over Hamilton to 12 points in the standings with five races remaining and could prove to be a pivotal win in this showdown, a classic in the making.

Verstappen and Red Bull won on a track where Hamilton and Mercedes have been dominant for years — the 36-year-old British star is a five-time winner at COTA — and he made Verstappen work for the win.

Hamilton chased Verstappen over the final 18 laps, and with one more, he might have caught Verstappen and regained the points lead.

Instead, his 24-year-old rival now has some breathing room heading into Mexico City, a high-altitude stronghold for Red Bull.

Hamilton is seeking a record-breaking eighth F1 title, and fifth in a row.

"Congratulations to Max, he did a great job today. It was such a tough race," Hamilton said. "Got a good start and gave it absolutely everything, but in the end of the day, they just had the upper hand this weekend."

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AP photo by Eric Gay / Red Bull driver Max Verstappen squeezes Mercedes driver Lewis Hamilton at the start of Formula One's U.S. Grand Prix at the Circuit of the Americas on Sunday in Austin, Texas.

As the popularity of Formula One explodes in the United States, the rivals delivered a dramatic finish in front of an estimated crowd of 140,000. It was one of the largest sporting events since the start of the coronavirus pandemic and drew the rich and famous to the Austin circuit.

Among the celebrities in attendance were actor Ben Stiller, rapper Meghan Thee Stallion, golfer Rory McIlroy and tennis champion Serena Williams, who all participated in the grid walk before the race. Basketball legend Shaquille O'Neal hosted a DJ dance party after the race and delivered the winner's trophy to the podium, where the 7-footer loomed large over Verstappen and Hamilton.

Sunday was the final race in COTA's original 10-year contract, but the U.S. Grand Prix is on the 2022 race calendar. Track president Bobby Epstein has said he expects to get a new long-term deal from F1.

"It's amazing to be here, but also to see so many (fans) around the track," Verstappen said before stepping to the podium as fans rushed onto the track for the celebration. "Hopefully we can do this for many years to come."

Hamilton and Verstappen kept the temperature rising all weekend. First, Verstappen called Hamilton a "stupid idiot" and flipped him the middle finger after an aggressive driving move in Friday practice. Hamilton later dismissed it as "fun and games." Verstappen then edged him for pole position on the final lap of qualifying Sunday.

All of it set up a fierce fight for the lead into Sunday's first turn because the winner at COTA has always come from the front row. Hamilton quickly jumped past Verstappen, and the two traded the lead four times over 56 laps.

It was a breathless start because Verstappen and Hamilton have collided twice this season and the risk of another one was high. This time Verstappen backed off the first corner and let Hamilton take the lead "to avoid any trouble." That was the only moment of potential danger for either car all day.

The drivers didn't seem to carry any hard feelings from the previous incidents when the race was finished. When Hamilton clinched the championship here in 2015, he flippantly tossed his hat to sulking teammate Nico Rosberg.

After Sunday's checkered flag, Hamilton and Verstappen exchanged fist bumps in pit lane, then clinked champagne bottles on the podium.

Yet Hamilton knows Sunday's result was a missed victory on a favorable circuit as Verstappen fights to dethrone him in the championship.

Hamilton acknowledged Mexico City's Autodromo Hermanos Rodriguez, where Verstappen has won twice, is a "very strong circuit" for Red Bull. So is the race after that in Sao Paolo, Brazil, where Verstappen won in 2019.

"It's going to be tough," Hamilton said.

Verstappen has had high expectations since he first joined F1 as a 17-year-old in 2015. Hamilton has been the dominant figure in F1 for nearly a decade, and one more title will break his tie with Michael Schumacher for most in F1. But he hasn't been in a fight like this in a long time.

After celebrating his latest win, Verstappen was quickly back to all business. He was as unflappable about the unfolding title chase in his favor as he was holding off Hamilton on the final laps.

"This doesn't really change a lot," Verstappen said. "This is all about details. A win doesn't give me more confidence. We are all confident. We need to nail details, starting in Mexico."

Sergio Perez finished third to put both Red Bull drivers on the podium, but the Mexican raced without access to water and called it one of the most physical competitions he has ever experienced.