Christian Pulisic fired the United States into the last 16 of the World Cup on Tuesday as the Americans downed Iran 1-0 in their politically charged grudge match, reports BSS.

Chelsea star Pulisic bundled home the do-or-die Group B game's only goal on 38 minutes to set up a second round clash with Group A winners the Netherlands on Saturday.

“The guys grinded, gave every single ounce and we are undefeated going into the next round.”

Pulisic left the field at half-time after sustaining a heavy knock while scoring his match-winning goal.

“I can't say enough positive things about Christian,” Berhalter said. “With this new injury it's stressful. I think I have less hair on my head now. But we'll take it and move on and go battle against Holland.”

The victory was no less than Berhalter's youthful side deserved in what was only the third international football clash between the bitter ideological rivals.

The build-up to a pulsating showdown had been marked by steadily escalating tension, with Iran's Football Federation on Sunday demanding FIFA sanction US Soccer for posting a modified version of their country's flag on social media.

But despite an electrifying atmosphere at Doha's Al Thumama Stadium, the game played out without controversy as the US avenged their 1998 World Cup defeat to Iran to send the Asian qualifiers crashing out of the tournament.

Iran's fans had roared their team onto the field at the start of the game amid a deafening cacophony of air-horns and cheers from the crowd of 42,127.

But despite the intimidating reception it was the Americans who looked more comfortable.

Bd-pratidin English/Tanvir Raihan