INGLEWOOD, Calif. — Folarin Balogun scored twice in the Americans’ historic three-goal first half, and the United States opened its first home World Cup in 32 years with its biggest win in the tournament, a dynamic 4-1 victory over Paraguay on Friday night.

Christian Pulisic had an assist in a stellar first-half playmaking performance for the Americans, who enthralled their Southern California fans with an aggressive attack while streaking to a 3-0 halftime lead — the team’s largest in any World Cup game.

Gio Reyna ripped another goal in the dying moments of the game, giving the Americans four goals in a World Cup match for the first time.

The United States scored only three goals in its four matches in Qatar four years ago, and it had never scored more than three in a World Cup match. But the Americans were a team transformed while playing in new coach Mauricio Pochettino’s more creative system in front of a passionate, star-studded Los Angeles crowd of 70,492.

Maurício scored in the second half for Paraguay, but La Albirroja fell too far behind early in their first World Cup match in 16 years.

After the Americans went ahead on an early own-goal created by Pulisic’s playmaking, Balogun scored in the 31st minute and again in the fifth minute of first-half injury time.

The New York-born, London-raised striker made his World Cup debut with the first multigoal performance from a US player in the tournament since Fall River’s Bert Patenaude hat trick in 1930. Balogun chose to represent the United States three years ago instead of staying in the English system, where he likely would have struggled to make the Three Lions’ roster — and the 24-year-old Monaco professional has swiftly provided the top-level striker play historically lacking on American rosters.