The pressure on manager Slaven Bilic will intensify if West Ham fail to turn their form around in the next three matches.
After three successive Premier League defeats and only one clean sheet in 2017, Bilic faces fixtures against Hull City, Arsenal and Swansea.
Another three games without a win could see West Ham’s board call time on the Croatian, who has been in charge since 2015.
The 48-year-old knows he has to halt the downward spiral soon, with the Hammers now just nine points off the Premier League’s relegation places.