Manuel Pellegrini accused Manchester City of tactical fouls in the Premier League champions' 5-0 thrashing of West Ham on Saturday.
Pep Guardiola's side started their title defence with an emphatic victory at London Stadium courtesy of goals from Gabriel Jesus, Sergio Aguero and a Raheem Sterling hat-trick.
Hammers manager Pellegrini felt his players were too "innocent", especially in the first half, as they conceded too many simple free-kicks when in promising positions.
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"Every time we tried to arrive in their box they committed fouls. We were innocent in that regard," he said.