Enzo Maresca's naive tactics were exposed and his side made too many mistakes playing out the back - but there was ONE positive for Chelsea: FIVE THINGS we learned after the Blues' humiliating 4-1 defeat by Celtic

Chelsea were humbled by Celtic in Indiana on Saturday as Enzo Maresca's side fell to a 4-1 friendly defeat at Notre Dame Stadium.

Matt O'Riley, Kyogo Furuhashi, Luis Palma and Michael Johnston found the net for the Hoops before a late Christopher Nkunku penalty kick got the Blues on the scoresheet.

This was Maresca's second pre-season outing as Chelsea's new manager.

His first was a 2-2 draw against Wrexham earlier in the week.

Mail Sport's KIERAN GILL was at Saturday's game and jotted down five things we learned from the action.