 On 15 May 2011 , West Ham 's relegation to the Championship was confirmed after a comeback from Wigan at the DW Stadium . With West Ham leading 0 – 2 at half @-@ time through two Demba Ba goals , Wigan battled back to win 3 – 2 thanks to an added @-@ time strike from Charles N 'Zogbia . Following the loss , West Ham announced the sacking of manager Avram Grant just one season into his tenure . On 1 June 2011 , Sam Allardyce was appointed as manager as Grant 's replacement . 
