James McClean's opener could not prevent West Brom from losing 2-1 to Slavia Prague in their first pre-season friendly.
McClean latched onto a through ball from Matt Phillips before rounding Slavia goalkeeper Jan Lastuvka and tucking home.
But the Baggies conceded twice in the second half as Slavia came from a goal down to secure victory in Kumberg, Austria.
Tony Pulis named a strong starting XI for the match, featuring key players Ben Foster, captain Jonny Evans, McClean and Salomon Rondon.