Manuel Pellegrini believes West Ham United earned a point against Chelsea because they negated the impact of Eden Hazard and Marcos Alonso.
The pair, who occupy the left side of the ground for Maurizio Sarri's team, have been pivotal to the Blues good run to the season.
However, a stout defensive performance from the Hammers on Sunday saw them settle for a point at London Stadium. And Pellegrini praised his side's performance after the game.
"We played well tactically because we allowed them to have the ball where we wanted, and we defended well," said Pellegrini.
"They played most of the game on their right side, so they didn't create too many chances."