Former Liverpool star Dirk Kuyt made an instant impact with new club Fenerbahce as he helped them into the UEFA Champions League play-offs.
Fener travelled to Romania outfit Vaslui having drawn the first leg in Istanbul 1-1.
But they came through 4-1 in the second leg with Kuyt grabbing a brace. Caner Erkin scored early on for Fener, but Marius Niculae levelled - which set up a nervous finish.
Then Kuyt struck twice before substitute Moussa Sow netted in injury time to seal their passage into the next round.
Swiss champions FC Basel, who made the last 16 last season, only just managed to get past Norway's Molde 2-1 on aggregate after a 1-1 draw in the second leg.
Jo Inge Berget put Molde ahead on the half-hour and the match looked to be heading for extra time until David Degen levelled and sent Basel through.
FC Copenhagen produced an excellent performance in Belgium as they won 3-2 at Club Brugge, which takes them through after a goalless first-leg in Denmark.
Copenhagen claimed the win courtesy of Cesar Santin's last-minute goal.
Partizan Belgrade bowed out, as they lost 1-0 at home to Cypriot's AEL Limassol with Dosa Junior scoring the goal which sent the visitors through 2-0 on aggregate.
Dinamo Zagreb cruised into the play-off stage as they hammered Sheriff of Moldova 4-0 in their second-leg, giving them a 5-0 aggregate success.
Belgian giants Anderlecht thumped Lithuanian's Ekranas 6-0, giving them an 11-0 aggregate win.
Slovenia's Marbior progressed 5-1 on aggregate after a 1-0 win over Dudelange in Luxembourg.
One Romanian side did make it through as CFR Cluj won 2-1 at Slovan Liberec - sending them through 3-1 on aggregate.
Israeli champions Hapoel Kiryat Shmona made it through 6-2 on aggregate after a 2-2 draw in Azerbaijan against Neftci.
Swedish champions Helsingborg safely made it to the play-offs after they beat Polish outfit Slask 3-1 courtesy of a Thomas Sorum hat-trick. They progress 6-1 overall.