Brazil's Juninho and Italy's Marco Delvecchio struck impressive goals at the Star Sixes in London.
Arsene Wenger says it was important that new signing Alexandre Lacazette got his first goal out of the way in preseason.
Alexandre Lacazette and Per Mertesacker each scored for Arsenal in their friendly against Sydney FC.
Arsenal's record signing Alexandre Lacazette made an immediate impact for his new club scoring 15 minutes into their friendly.
Clint Dempsey scored for Seattle as they played to a draw with Bundesliga club Eintracht Frankfurt in a friendly.
Brad Guzan, Kelyn Rowe and Dom Dwyer stood out for the U.S. in a Gold Cup opener marred by the struggles of several others.