|Referee: Robert Schörgenhofer (AUT) – Stadium: Şähär stadionu, Lankaran (AZE)|
|Referee: Tony Asumaa (FIN) – Stadium: Vitebsk Central sport complex, Vitebsk (BLR)|
|Referee: Lorenc Jemini (ALB) – Stadium: District Sport Complex, Orhei (MDA)|
|Referee: Antti Munukka (FIN) – Stadium: Daugava, Liepaja (LVA)|
|Referee: Alon Yefet (ISR) – Stadium: Saturn, Ramenskoye (RUS)|
|Referee: Antonio Mateu Lahoz (ESP) – Stadium: Lovech Stadion, Lovech (BUL)|
|Referee: Hubert Siejewicz (POL) – Stadium: Bashkimi Stadium, Kumanovo (MKD)|
|Referee: Marco Fritz (GER) – Stadium: Kadriorg, Tallinn (EST)|
|Referee: Emir Alecković (BIH) – Stadium: Mikheil Meskhi, Tbilisi (GEO)|
|Referee: Mihaly Fabian (HUN) – Stadium: Dalga Stadium, Baku (AZE)|
|Referee: Neil Doyle (IRL) – Stadium: Harjun Stadion, Jyvaskyla (FIN)|
|Referee: Fernando Teixeira (ESP) – Stadium: ŠRC Stožice, Ljubljana (SVN)|
|Referee: Mark Steven Whitby (WAL) – Stadium: La Frontière, Esch-sur-Alzette (LUX)|
|Referee: Ovidiu Alin Hategan (ROU) – Stadium: Stroitel, Soligorsk (BLR)|
|Referee: Richard Liesveld (NED) – Stadium: Itztadion Ramat Gan, Ramat Gan (ISR)|
|Referee: Ruddy Buquet (FRA) – Stadium: Lerkendal Stadion, Trondheim (NOR)|
|Referee: Tommy Skjerven (NOR) – Stadium: Antona Malatinského, Trnava (SVK)|
|Referee: Bruno Paixão (POR) – Stadium: Georgi Asparuhov Stadion, Sofia (BUL)|
|Referee: Pawel Gil (POL) – Stadium: GSP Stadium, Nicosia (CYP)|
|Referee: Hüseyin Göçek (TUR) – Stadium: Ruch, Chorzow (POL)|
|Referee: Boško Jovanetić (SRB) – Stadium: Aarhus Stadion, Aarhus (DEN)|
|Referee: Marco Borg (MLT) – Stadium: Mestský, Mlada Boleslav (CZE)|
|Referee: Wim Smet (BEL) – Stadium: Råsundastadion, Solna (SWE)|
|Referee: Ante Vučemilović-Šimunović Jr. (CRO) – Stadium: Atatürk, Eskisehir (TUR)|
|Referee: Aleksei Kulbakov (BLR) – Stadium: Stadiumi Kombëtar Qemal Stafa, Tirana (ALB)|
|Metalurh Donetsk||7-0||Čelik Nikšić|
|Referee: Jakob Kehlet (DEN) – Stadium: Metallurh, Donetsk (UKR)|
|Referee: Paolo Silvio Mazzoleni (ITA) – Stadium: Gradski stadion Koprivnica, Koprivnica (CRO)|
|Referee: Carlos Xistra (POR) – Stadium: Zimbru, Chisinau (MDA)|
|Referee: Mark Courtney (NIR) – Stadium: LFF, Vilnius (LTU)|
|Referee: Miroslav Zelinka (CZE) – Stadium: Stade de Suisse, Berne (SUI)|
|Referee: Stavros Tritsonis (GRE) – Stadium: Giulesti - Valentin Stanescu, Bucharest (ROU)|
|Referee: Damir Batinić (CRO) – Stadium: Stade de Genève, Geneva (SUI)|
|Referee: Cyril Zimmermann (SUI) – Stadium: FC Twente Stadion, Enschede (NED)|
|Referee: Sergei Karasev (RUS) – Stadium: HaMoshava, Petah Tikva (ISR)|
|Referee: Kristinn Jakobsson (ISL) – Stadium: Gradski vrt, Osijek (CRO)|
|Referee: Lee Probert (ENG) – Stadium: Športni park, Lendava (SVN)|
|Referee: Aleksei Nikolaev (RUS) – Stadium: Štadión Pasienky, Bratislava (SVK)|
|Referee: Bobby Madden (SCO) – Stadium: Karadjordje, Novi Sad (SRB)|
|Referee: Anastassios Kakos (GRE) – Stadium: Stadion Poljud, Split (CRO)|
|Široki Brijeg||1-1||St Patrick's|
|Referee: István Kovács (ROU) – Stadium: Pecara, Siroki Brijeg (BIH)|
Last updated: 17/05/2013 16:46 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.