The Hammers crashed to their first defeat at the London Stadium thanks to a goal from former Tykes and West Brom midfielder Filipe Teixeira .
Their first defeat at the London Stadium is a humiliating 1 - 0 Europa League play - off loss to Astra Giurgiu .
The Hammers crashed to their first defeat at the London Stadium , a humiliating 1 - 0 Europa League play - off loss to Astra Giurgiu , thanks to a goal from former Tykes and West Brom midfielder Filipe Teixeira .