David Moyes admitted he would not have believed anyone who told him at the start of the season that West Ham would be above the champions in February.
However, the Hammers boss has warned the teams in and around the top of the Premier League that there is still more to come from his high-flying side.
West Ham swatted away Sheffield United 3-0 despite having their only recognised striker Michail Antonio once again out injured.
Instead loanee Jesse Lingard provided the attacking menace as goals from Declan Rice, Issa Diop and Ryan Fredericks lifted them above Liverpool and briefly into fourth place.