New signing Gabriel Jesus scored his fourth goal of pre-season as Arsenal comfortably beat Chelsea 4-0 in a friendly in Florida on Saturday.
Jesus, who joined from Manchester City in a £45m deal on 4 July, put Arsenal ahead after 15 minutes.
Martin Odegaard and Bukayo Saka added to the scoresheet before Albert Sambi Lokonga scored in the 90th minute.
Arsenal have now won all three of their matches on their US tour, scoring nine goals.
Chelsea manager Thomas Tuchel could not hide his frustration following a lacklustre display from his team.
"I am far from relaxed," Tuchel said.