|Referee: Ruddy Buquet (FRA) – Stadium: Saturn, Ramenskoye (RUS)|
|Referee: Sébastien Delferiere (BEL) – Stadium: Kuopion Keskuskenttä, Kuopio (FIN)|
|Arsenal Kyiv||0-3 (f)||Mura|
|Referee: Antti Munukka (FIN) – Stadium: Stadion Dinamo im. Valeriy Lobanovskyi, Kyiv (UKR)|
|Referee: Ken Henry Johnsen (NOR) – Stadium: Mikheil Meskhi, Tbilisi (GEO)|
|Referee: Pavle Radovanović (MNE) – Stadium: Itztadion Ramat Gan, Ramat Gan (ISR)|
|Referee: Antonio Damato (ITA) – Stadium: Ruch, Chorzow (POL)|
|Referee: Emir Alecković (BIH) – Stadium: GSP Stadium, Nicosia (CYP)|
|Referee: Steven McLean (SCO) – Stadium: Alfheim, Tromso (NOR)|
|Referee: Fernando Teixeira (ESP) – Stadium: Kalmar Arena, Kalmar (SWE)|
|Referee: Marco Fritz (GER) – Stadium: Råsundastadion, Solna (SWE)|
|Referee: Ante Vučemilović-Šimunović Jr. (CRO) – Stadium: Keine Sorgen Arena, Ried-innkreis (AUT)|
|Referee: Manuel De Sousa (POR) – Stadium: Abe Lenstra, Heerenveen (NED)|
|Referee: Kristo Tohver (EST) – Stadium: FC Twente Stadion, Enschede (NED)|
|Referee: Kevin Blom (NED) – Stadium: National Arena, Bucharest (ROU)|
|Referee: Simon Lee Evans (WAL) – Stadium: Stade de Genève, Geneva (SUI)|
|Referee: Vlado Glodjović (SRB) – Stadium: Asteras Tripolis, Tripoli Arkadia (GRE)|
|Referee: Ivan Kružliak (SVK) – Stadium: Tsentralny, Gomel (BLR)|
|Referee: Tony Asumaa (FIN) – Stadium: KRC Genk Arena, Genk (BEL)|
|Referee: Mark Courtney (NIR) – Stadium: Horsens Idrætspark, Horsens (DEN)|
|Referee: Rene Eisner (AUT) – Stadium: Stadion FK Crvena zvezda, Belgrade (SRB)|
|Referee: Paolo Silvio Mazzoleni (ITA) – Stadium: Sóstói, Szekesfehervar (HUN)|
|Dundee United||2-2||Dinamo Moskva|
|Referee: Marius Avram (ROU) – Stadium: Tannadice Park, Dundee (SCO)|
|Referee: Pawel Gil (POL) – Stadium: Atatürk, Eskisehir (TUR)|
|Referee: Tamás Bognar (HUN) – Stadium: Tallaght Stadium, Dublin (IRL)|
|Referee: Hüseyin Göçek (TUR) – Stadium: Hajduk, Split (CRO)|
|Referee: Artyom Kuchin (KAZ) – Stadium: Karadjordje, Novi Sad (SRB)|
|Referee: Serhiy Boiko (UKR) – Stadium: Estadio de San Mamés, Bilbao (ESP)|
|Referee: Anastassios Kakos (GRE) – Stadium: Asim Ferhatović Hase Stadion, Sarajevo (BIH)|
|Referee: Martin Hansson (SWE) – Stadium: Bundesstadion Südstadt, Maria Enzersdorf (AUT)|
Last updated: 03/04/2013 00:49 CET
The UEFA Europa League comprises three qualifying rounds, a play-off round, a group stage and five knockout rounds.
In matches in the three qualifying rounds and the play-offs, clubs play two matches against each other on a home-and-away basis. The club which scores the greater aggregate of goals qualifies for the next round, with away goals and then penalties used to determine the winner in the event of a draw.
The play-off round winners join the ten losers from the UEFA Champions League play-offs and automatic entrants. The clubs are split into 12 groups of four teams, playing home and away against each of their pool opponents between September and December. Two sides from each section advance, proceeding into the round of 32 alongside eight third-placed teams from the UEFA Champions League group stage.
From the last 32 until the semi-finals, clubs play two games against each other on a home-and-away basis with the same rules as the qualifying and play-off rounds applied. In the last 32, group winners and the four third-placed sides from the UEFA Champions League with the best records are seeded, guaranteeing they will play the second leg at home. Teams from the same group or the same association cannot be drawn together. From the round of 16 onwards the draw is free.
The final is decided by a single match, which this season will be played at the Amsterdam ArenA on Wednesday 15 May.
Further details, including the criteria for separating teams that finish level on points in a group, can be found in the official competition regulations.