Celtic inflicted a 4-1 defeat on Chelsea in their pre-season friendly at Notre Dame Stadium in Indiana.
The Scottish Premiership champions took the lead with Matt O'Riley's calm finish from Greg Taylor's pass, before O'Riley turned provider for Kyogo Furuhashi to double their advantage before half-time.
Chelsea had more possession and produced more shots at goal, but Celtic's new goalkeeper Kasper Schmeichel was in impressive form to deny the Premier League side a route back into the game.
Celtic stretched their lead in the 76th minute as Luis Palma capitalised on a defensive mix-up by Robert Sanchez and Benoit Badiashile to roll in their third goal.