Jose Mourinho’s side led through a Loic Remy strike at the interval, but a defensive error involving the goalkeeper an John Terry sparked a fightback from the Red Bulls
Asmir Begovic endured a difficult debut as Chelsea suffered a 4-2 loss to New York Red Bulls in the International Champions Cup.
Loic Remy opened the scoring with an emphatic strike in the first half and had the chance to double the lead, but failed to divert a cross into an open goal.
The Red Bulls were level shortly after the break when second half substitute Begovic was tackled by Franklin Castellanos, who finished into an empty net after a poor pass from John Terry.
Begovic was beaten again midway through the second half by a header from 16-year-old Tyler Adams, before Sean Davis slotted home from close range.
Eden Hazard pulled a goal back for Chelsea but Davis scored again as a disorganised Chelsea back line fell apart after the interval.