Last season's beaten finalist Athletic Bilbao was made to work hard by Croatian side Slaven Belupo before edging through 4-3 on aggregate in the Europa League third qualifying round.
Bilbao, beaten in last season's final by fellow Spanish side Atletico Madrid, had led 3-1 from the first leg but twice went behind in the city of Koprivnica.
The Croatian side took the lead after 28 minutes through defender
However, a second goal for the home side by
Danish side AC Horsens shocked Swedish rival Elfsborg with an aggregate 4-3 win after winning the second leg 3-2 in Boras.
With the tie 1-1 after the first leg it was the visiting outfitr which took the lead after three minutes through
But nine minutes before half-time Kortegaard got his second which proved decisive for Horsens.
Dinamo Moscow thrashed Scottish side Dundee United 5-0 to go through 7-2 on aggregate, with substitute
Belgian side Racing Genk went through 4-2 on aggregate after a 2-1 away win to Aktobe Lento.
Crvena Zvezda scraped through 6-5 on penalties against Omonia Nicosia in
APOEL Nicosia, who made history last season when it became the first Cypriot side to reach the quarter-finals of the Champions League, defeated Aalesund 1-0 to complete a 3-1 aggregate win.
Aleksander Prijovic scored as early as the ninth minute as Tromso won 1-0 away to Metallurg Donetsk to triumph 2-1 on aggregate.
FC Twente completed a comfortable win against
Goals from Emmanuel Mayuka,
Steaua Bururesti overturned a 1-0 deficit by defeating Spartak Trnava 3-0 and Videoton beat Gent 3-0 to make it 4-0 overall.
Bucharest's highest court has ordered a retrial in the case of eight Romanian football officials who were sentenced to prison for tax evasion and money laundering in connection with the transfer of 12 players over a six-year period.