Teenager Gabriel Martinelli scored on his debut for Arsenal to help lift the side to a 3-0 win over the Colorado Rapids during their pre-season tour.
The 18-year-old, who was signed for £6million from Brazil’s Ituano FC on July 2, fired home a cross from Dominic Thompson in the 61st minute in Denver.
Bukayo Saka and James Olayinka’s first-half efforts had earlier put the Gunners firmly in control as they kicked off their tour of the United States.
Martinelli was in fine form from the off, just missing a chance to put himself on the scoreboard in the first five minutes when his finish went wide.
Seventeen-year-old Saka put Arsenal in the lead after 13 minutes, dinking the ball over Colorado goalkeeper Clint Irwin following impressive work from Eddie Nketiah, before Olayinka doubled the advantage 16 minutes later with a strike into the top left-hand corner.
Unai Emery had featured many of the younger players in his starting line-up, but Mesut Ozil, Pierre-Emerick Aubameyang and Alexandre Lacazette were brought on in the closing minutes.
Arsenal USA Tour Fixtures
Wednesday, July 17: Arsenal vs. Bayern Munich — Los Angeles, Dignity Health Sports Park – Buy Arsenal v Bayern Munich Tickets
Saturday, July 20: Arsenal vs. Roma — Charlotte, Bank of America Stadium – Buy Arsenal v Roma Tickets
Tuesday, July 23: Real Madrid vs. Arsenal — Washington, D.C., FedEx Field – Buy Real Madrid v Arsenal Tickets