Whatever Alonso said at halftime clearly worked.

Atalanta are in the last four of a European competition for the first time since 1988.

Daniele De Rossi will stay on long-term as Roma coach, the Serie A club announced on Thursday, hours before their Europa League quarter-final decider with AC Milan.

Jonas Hofmann and Victor Boniface scored after coming off the bench as Bayer Leverkusen beat West Ham 2-0 at home on Thursday in their Europa League quarter-final first leg.

Atalanta stunned Anfield as Gianluca Scamacca scored twice in a 3-0 win on Thursday to leave Liverpool with a mountain to climb to reach the Europa League semi-finals.

AC Milan, Marseille, Roma and West Ham were among the other sides to also book their place in Friday's quarter-final draw.

The draws for the last 16 of both competitions will be made at UEFA headquarters in Nyon on Friday.

AC Milan, meanwhile, were drawn against French club Rennes.