West Brom's second-half collapse at West Ham extended their winless streak to 20 league matches and moved them ever-closer to a very unwanted Premier League record.
Andy Carroll's brace in the second period, including a 94th-minute winner to steal all three points for David Moyes' Hammers, condemned the Baggies to their 10th defeat of the season and leaves Alan Pardew's side languishing in 19th with just goal difference separating them from rock-bottom Swansea.
West Brom haven't tasted victory in the league since August - a 1-0 win at Burnley - and the 2-1 defeat at the London Stadium on Tuesday night has moved them above Nottingham Forest and Aston Villa into fourth in the standings for the longest top flight streak without a win.
West Brom's defeat at West Ham extended their Premier League winless run to 20 games
Now just one game behind Norwich, who endured a 21-match run without victory in 2004, and six short of Sunderland's record set in 2005, things are looking bleak at the Hawthorns.
Paul Jewell's Derby side in 2007/08 are distant leaders and remain the Premier League's worst ever side, with one win, 11 points and a 32-game winless run forcing them back into the Championship where they have remained ever since.
Pardew's start to life as West Brom manager has fallen short of the impact that was expected of the former Hammers and Crystal Palace boss, with his side without a win since his appointment at the end of November and four points adrift of safety.
Alan Pardew's side haven't won a Premier League game since August 19 - a 1-0 win at Burnley
West Brom's last 20 Premier League games
Stoke (H) 1-1; Brighton (A) 3-1 L; West Ham (H) 0-0; Arsenal (A) 2-0 L; Watford (H) 2-2; Leicester (A) 1-1; Southampton (A) 1-0 L; Manchester City (H) 3-2 L; Huddersfield (A) 1-0 L; Chelsea