Underdogs Eintracht Frankfurt scored a major upset when they stunned hosts Barcelona 3-2 on Thursday thanks to two goals from winger Filip Kostic to march into the semi-finals of the Europa League.

Serbia international Kostic converted a fourth-minute penalty and added another in the 67th with a low drive after Rafael Borre thundered in their second goal in the 36th for a 4-3 aggregate victory and a sensational win at Camp Nou.

The Catalans, pre-match favourites after a first leg 1-1 draw in Germany last week, missed a couple of chances with Pierre-Emerick Aubameyang, but were far less threatening than their opponents who could have added to their tally.

They did score twice in stoppage time through a Sergio Busquets shot and Memphis Depay’s penalty after Frankfurt’s Evan N’Dicka was sent off but ran out of time for a third goal that would have forced extra time.

Midfielder Pedri Gonzalez will be sidelined for an unspecified period after an injury during the loss. The 19-year-old Pedri tore the femoral biceps in his left hamstring and was substituted at half time.

Club president Joan Laporta said he was “embarrassed and ashamed” after a reported 30,000 Eintracht fans made it into the Camp Nou despite away fans only being allocated 5,000 tickets.

Frankfurt will next face West Ham after the Premier League club advanced to a European competition semi-finals for first time since 1976 by eliminating Lyon 4-1 on aggregate.

Earlier, Christopher Nkunku scored twice to help Leipzig reach the semi-finals with a 2-0 victory at Atalanta. Kemar Roofe scored in extra time for Rangers to prevail 3-1 over Braga for a 3-2 aggregate victory to face Leipzig next.