His team should have been out of sight by halftime after missing numerous opportunities, but Jarrod Bowen’s penalty sent United to their fourth Premier League loss of the year.
Referee David Coote was brought to the pitchside monitor by the video assistant referee (VAR) to examine Matthijs de Ligt’s challenge on Danny Ings after dismissing the first penalty appeals.
Bowen scored in the second minute of added time after Coote directed to the spot following a protracted stoppage and disregarded United’s players’ appeals about an Ings handball.
Ten Hag told Match of the Day that prior to the season, there was a directive that VAR should only be used to correct blatant errors.
There is no doubt that the on-field referee did not make a glaring error.
West Ham now sits in 13th place in the Premier League, one spot ahead of Manchester United, who have only won three of their first nine games.
After the match at London Stadium, Dutchman Ten Hag claimed to have had a conversation with the officials.