Atalanta's place in Serie A's Champions League positions is under threat after their home hoodoo continued with Sunday's 1-0 defeat to fellow top four hopefuls Lazio. Contenders for a first league title only a few weeks ago, a third straight defeat has left third-placed Atalanta looking over their shoulders at a clutch of teams bidding for a spot in Europe's elite club competition. Gustav Isaksen poked home Lazio's winner after a defensive mix-up in the 54th minute in Bergamo, where Atalanta haven't won a domestic fixture since before Christmas.