Inter Milan coach Antonio Conte believes his side needs to be more clinical in the remaining games of the Serie A.
The polish on Conte's tenure at Chelsea has become tarnished both at boardroom level and amongst his players.
The defeat to the Hammers left Chelsea 11 points behind leaders Manchester City with 16 league matches in hand.
Conte's side play Newcastle United in the 1230 GMT kick-off at Stamford Bridge on Saturday, having beaten Swansea City 1-0 on Wednesday.
Chelsea manager Antonio Conte has been charged with misconduct after he was sent to the stands during a Premier League game.
The reigning Premier League champions will kick off at Leicester on Saturday in sixth place on six points, one spot below West Bromwich and one above Watford.
Antonio Conte has accepted he may have to embed a new formation in his team if they continue to have players sent off.
Antonio Conte says reuniting Chelsea's fractured team-spirit was the key to their charge to the Premier League title.
Chelsea manager Antonio Conte has conceded he cannot guarantee Eden Hazard will still be at the club next season.
Conte's hopes of a domestic double in his first season as Chelsea manager faces a formidable obstacle as Tottenham Hotspur.
Conte remains adamant about one thing: his extraordinarily animated touchline behaviour will never change.