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Chelsea's experimental lineup in a Club World Cup friendly against Philadelphia Union backfired spectacularly. A two-goal collapse in six minutes, followed by Nicolas Jackson's red card, sealed a loss. Manager Enzo Maresca admitted to experimenting with formations to prepare for the upcoming season, despite the setback. While the defeat won't eliminate Chelsea from the tournament, it sets up a tougher potential knockout round matchup.

Prepared by Emily Rhodes and reviewed by editorial team.