West Ham vice-chair Karren Brady says the club "won't panic" and manager Graham Potter will be given time to turn things around following a disappointing defeat to Sunderland in their Premier League opener.
The Hammers were beaten 3-0 to the newly promoted Black Cats at the Stadium of Light on Saturday - a continuation of the patchy form under Potter since his appointment in January.
The former Brighton and Chelsea boss has won five, drawn five and lost 10 of his 20 matches in charge since he replaced Julen Lopetegui.
Some angry fans called for Potter to be sacked amid fears of a relegation battle this season.