Defensive lapses cost Manchester City and Barcelona dearly as both teams slumped to notable losses in the Champions League on Tuesday. In Pep Guardiola’s 100th Champions League game as City coach, his team struggled to cope with Bayer Leverkusen’s quick transitions in a 2-0 defeat, while Barcelona had an own goal and a red card in its 3-0 loss at Chelsea. Guardiola made 10 changes to his starting lineup following Saturday’s loss to Newcastle in the Premier League, with Erling Haaland among those on the bench, but it didn’t have the desired effect.

FIFA Club World Cup champions Chelsea of the English Premier League beat Spain's Barcelona 3-0 in the Champions League.

Alejandro Grimaldo and Patrik Schick fired Bayer Leverkusen to a shock 2-0 win against an under-strength Manchester City in the Champions League