Four-time European champions Ajax cruised to a 4-1 victory in Bulgaria in Europa League qualifying on Thursday while Aberdeen returned to the scene of their European triumph and fought back for a draw.
For their Europa League play-off round first leg, Aberdeen went to Gothenburg, where they beat Real Madrid in the Cup Winners Cup final in 1983, and salvaged a 2-2 draw as Swedish champions FC Hacken imploded in the last 15 minutes.
A penalty from Ibrahim Sadiq put the hosts two goals up after 69 minutes. Bojan Miovski turned his defender and fired home after 75 minutes. The North Macedonian then set up Nicky Devlin, bursting in the box, for the right back's first Aberdeen goal four minutes later.
Hacken's Johan Hammar earned a second yellow card for blocking Miovski in the 90th minute. Aberdeen then went close twice and a had a strike ruled out for offside in added time.
Ghana international Mohammed Kudus scored a hat-trick as Ajax won 4-1 away to Ludogorets in Bulgaria. Brian Brobbey hit the other Ajax goal and defender Olivier Verdon scored a late reply for the hosts.
KI Klaksvik, already sure to become the first Faroese club to secure a place in the group stage of a European competition, drew 1-1 with Moldovans Sheriff in Torshavn.
Danish defender Patrick Da Silva gave the hosts a 52nd-minute lead. Jerome Ngom Mbekeli, who plays as a defender for Cameroon but a striker for Sheriff, replied in the 73rd minute. Last year's surprise quarter-finalists Union SG of Belgium beat Lugano 2-0.