The last two winners of the UEFA Europa League meet at Stamford Bridge aiming to progress to the UEFA Champions League final. It is José Mourinho's fifth successive appearance in the semi-finals and his Chelsea FC side are level with Club Atlético de Madrid after a goalless first leg.
• Signed by Chelsea in 2011, Thibaut Courtois is in his third season on loan at Atlético and will look to help deny his permanent employers their third UEFA Champions League final in seven seasons. The Spanish side, in the semi-finals for the first time since 1974, are the last unbeaten team left in the competition having won eight and drawn three of their 11 matches this season.
• The teams met in the 2012 UEFA Super Cup when Radamel Falcao's first-half hat-trick gave Atlético a 4-1 victory in Monaco and their second triumph in the competition in three years. Gary Cahill scored Chelsea's consolation after Miranda had made it 4-0 on the hour.
• The lineups at the Stade Louis II on 31 August 2012 were:
Atlético: Courtois, Juanfran, Godín, Miranda, Filipe Luís, Mario Suárez, Gabi, Koke (García 81), Adrián López (Rodríguez 56), Arda Turan, Falcao (Emre Belözoğlu 87).
Chelsea: Čech, Ivanović, David Luiz, Cahill, Cole (Bertrand 69), Ramires (Oscar 46), Lampard, Mikel, Mata (Sturridge 81), Hazard, Torres.
• The teams' only other encounters came in the 2009/10 UEFA Champions League group stage when Chelsea collected four points from their Spanish rivals to finish top of Group D. Atlético came third and transferred to the maiden edition of the UEFA Europa League, which they eventually won.
• Carlo Ancelotti's Chelsea won 4-0 at Stamford Bridge, Salomon Kalou scoring twice (41, 52) before Frank Lampard (69) added another and Luis Perea (90+1) headed a Florent Malouda free-kick into his own net. The defeat prompted the departure of Atlético coach Abel Resino, Quique Sánchez Flores taking over.
• The lineups on 21 October 2009 were:
Chelsea: Čech, Belletti, Ivanović, Terry, A Cole (Malouda 75), Ballack, Essien, Lampard, Kalou (Zhirkov 73), Deco, Anelka (Sturridge 78).
Atlético: Asenjo, Ujfaluši, Perea, Domínguez, López, Cléber (Rodríguez 65), Raúl García, Paulo Assunção (Jurado 54), Forlán, Simão (Reyes 77), Agüero.
• The game in Spain two weeks later ended 2-2, confirming Chelsea's knockout place and ending Atlético's hopes. Substitute Sergio Agüero (66, 90+1) earned a point despite Didier Drogba's double (82, 88).
• Chelsea's seventh UEFA Champions League semi-final appearance in 11 campaigns was sealed with a 2-0 win at Stamford Bridge against Paris Saint-Germain after they had lost the away leg 3-1.
• Chelsea have won only one of their four previous UEFA competition semi-finals against Spanish opponents, against FC Barcelona in the 2011/12 UEFA Champions League semi-finals. They lost to the same opponents in that competition in 2009 and, in the UEFA Cup Winners' Cup, against RCD Mallorca (1998/99) and Real Zaragoza (1994/95).
• Before losing to Atlético in Monaco, Chelsea had gone 15 competitive fixtures without defeat against Spanish opponents. Their last reverse prior to that was a 2-1 home loss against Barcelona in the 2005/06 UEFA Champions League round of 16.
• That Barcelona loss was Chelsea's only defeat at home to Liga opponents; their record is W9 D4 L1. In two-legged UEFA competition ties their record is W4 L5.
• They beat Real Madrid CF to lift the 1998 UEFA Super Cup, winning 1-0 in Monaco, and won their first European honour by overcoming the same opponents in the 1971 European Cup Winners' Cup final in Athens, prevailing 2-1 in the replay after a 1-1 draw.
• Chelsea, UEFA Champions League winners two years ago, have won two of their six previous semi-finals in the competition:
2011/12 v FC Barcelona, won 3-2 (1-0 home, 2-2 away)
2008/09 v FC Barcelona, 1-1, lost on away goals (0-0 away, 1-1 home)
2007/08 v Liverpool FC, won 4-3 (1-1 away, 3-2 home)
2006/07 v Liverpool FC, 1-1, lost 1-4 on pens (1-0 home, 0-1 away)
2004/05 v Liverpool FC, lost 0-1 (0-0 home, 0-1 away)
2003/04 v AS Monaco FC, lost 3-5 (1-3 away, 2-2 home)
• This is Chelsea's 12th UEFA competition semi-final; their record is W5 L6.
• In UEFA competition Chelsea have lost the tie twice on the seven occasions they have drawn their first leg away from home, defeating Galatasaray AŞ in this season's round of 16 (1-1 away, 2-0 home). When drawing 0-0 away first they have won one tie but lost two, most recently against Barcelona in the 2008/09 semi-finals (0-0 away, 1-1 home).
• Mourinho, who captured the UEFA Champions League with FC Porto (2004) and FC Internazionale Milano (2010), is bidding to become the first manager to win the European Cup with three different teams. Only Bob Paisley (Liverpool FC 1977, 1978, 1981) has won the trophy three times as a coach.
• Mourinho left Inter in 2010 and guided Real Madrid to the semi-finals in each of the next three seasons, losing to Barcelona (3-1 on aggregate), Bayern (3-1 on penalties after 3-3 aggregate draw) and Borussia Dortmund (3-4).
• Atlético have won only once in nine away fixtures against English sides, losing four and drawing four. Their sole success was a 2-0 win at Leicester City FC in the 1997/98 UEFA Cup first round. In seven two-legged ties with English clubs in UEFA competition, Atlético have won five and lost two.
• In 2009/10 they beat Fulham FC 2-1 after extra time in Hamburg in the inaugural UEFA Europa League final having put out Liverpool FC on away goals in the semi-final. They lost 5-1 to Tottenham Hotspur FC in the 1962/63 European Cup Winners' Cup final in Rotterdam.
• Diego Simeone's men have won three and drawn two of their five away games in this season's competition and have won ten of their last 14 away games in European competition, losing just two.
• Atlético are making their 13th appearance in a major UEFA club competition semi-final having won six and lost six. Their three previous three European Cup semi-finals have produced one win and two defeats:
1973/74 v Celtic FC, won 2-0 (0-0 away, 2-0 home)
1970/71 v AFC Ajax, lost 1-3 (1-0 home, 0-3 away)
1958/59 v Real Madrid CF, lost 1-2 in a replay (1-2 away, 1-0 home)
• The Spanish side have won four of seven UEFA competition ties after a home first-leg draw, including both where the first-leg score was 0-0: against Sporting Clube de Portugal in the 2009/10 UEFA Europa League round of 16 (2-2 away) and Galatasaray in the 1973/74 European Champion Clubs' Cup first round (1-0 away).
• Chelsea's record in European penalty shoot-outs is W1 L3:
4-5 v FC Bayern München, 2013 UEFA Super Cup
4-3 v FC Bayern München, 2011/12 UEFA Champions League final
5-6 v Manchester United FC, 2007/08 UEFA Champions League final
1-4 v Liverpool FC, 2006/07 UEFA Champions League semi-final
• Atlético have lost all three of their UEFA competition penalty shoot-outs:
6-7 v Derby County FC, 1974/75 UEFA Cup second round
1-3 v ACF Fiorentina, 1989/90 UEFA Cup first round
1-3 v Villarreal CF, 2004 UEFA Intertoto Cup final
• Courtois joined Chelsea from KRC Genk in 2011. He has made over 100 Liga appearances for Atlético and played in the 2012 UEFA Super Cup win against the Blues.
• Born in the Madrid suburb of Fuenlabrada, Fernando Torres became Atlético's youngest captain at 19 and scored 84 goals in 214 Liga appearances for the Rojiblancos before joining Liverpool in 2007.
• Tiago scored four goals in 34 Premier League games for Chelsea between 2004 and 2006.
• Mourinho's record against Atlético with Real Madrid was W8 D0 L1. The sole defeat came in last season's Copa del Rey final at the Santiago Bernabéu, Simeone's side winning 2-1 after extra time.
• While a SS Lazio player, Simeone lost against Mourinho's Porto in the 2002/03 UEFA Cup semi-finals.
• Torres and Juanfran were in Spain's victorious UEFA EURO 2012 squad. Koke, Mario Suárez, Adrián López, Diego Costa, David Villa and César Azpilicueta are also Spanish internationals.
• David Luiz, Oscar, Ramires, Willian, Filipe Luís, Miranda and Diego are all Brazil internationals. Tiago and Hilário have been capped by Portugal. Courtois, Toby Alderweireld and Eden Hazard are team-mates with Belgium.
• Azpilicueta won on three of his five CA Osasuna appearances against Atlético between 2007 and 2010.
• Villa scored in Valencia's 2-1 UEFA Champions League group stage defeat at home to Chelsea on 3 October 2007.
• Samuel Eto'o scored seven goals in 12 appearances against Atlético for Real Madrid, Mallorca and Barcelona between 1999 and 2009.
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