Chelsea FC are used to holding sway over French visitors but that record will be tested against free-scoring Paris Saint-Germain, who lead 3-1 from the first leg.
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Chelsea FC have conceded in only one of their five home matches against French teams but José Mourinho's side will be wary of Paris Saint-Germain, who have scored 14 goals in four away games in the 2013/14 UEFA Champions League and who visit London with a healthy 3-1 quarter-final first-leg advantage.
• Paris will be without their injured striker Zlatan Ibrahimović, who has ten goals in the campaign and worked under Mourinho at FC Internazionale Milano in 2008/09, as they seek their second semi-final appearance.
• The teams' sole previous meeting at Stamford Bridge, in the 2004/05 UEFA Champions League group stage, ended goalless. Chelsea had already qualified and went on to top the group while Paris came bottom.
• The full lineups at Stamford Bridge on 24 November 2004 were:
Chelsea: Cudicini, Johnson, Gallas, Carvalho, Bridge, Parker, Lampard (Drogba 62), Smertin, J Cole, Kežman (Gudjohnsen 62), Robben (Duff 46).
Paris: Letizi, Pichot, Mendy, Yepes, Cana, Armand, M'Bami, Cissé (Bošković 83), Pierre-Fanfan, Reinaldo (Coridon 77) Pauleta (Pancrate 90).
• The match in Paris was Mourinho's first European fixture in charge of Chelsea, the season after he lifted the trophy for the first time with FC Porto. His side won 3-0 through a John Terry header and two strikes from Didier Drogba.
• The teams also drew 1-1 in a friendly on 23 July 2012 at Yankee Stadium in New York, Nenê and Lucas Piazon scoring the goals. The starting lineups were:
Chelsea: Čech, Ferreira, Luiz, Cahill, Hutchinson, De Bruyne, Lampard, Mikel, Hazard, Lukaku, Kakuta.
Paris: Douchez, Sakho, Alex, Armand, Jallet, Nenê, Bodmer, Chantôme, Pastore, Lavezzi, Gameiro.
• Chelsea have received visitors from France on five occasions and kept four clean sheets. In the 2003/04 UEFA Champions League semi-final second leg they drew 2-2 with AS Monaco FC, bowing out 5-3 on aggregate.
• The Londoners beat an FC Girondins de Bordeaux outfit coached by Laurent Blanc 4-0 at home in the 2008/09 group stage – Frank Lampard with the opener – before a 1-1 draw in France. They also overcame Olympique de Marseille 1-0 in both the 2010/11 group stage and the 1999/2000 second group stage.
• Paris have played eight games against English teams with the record W2 D3 L3. First leg aside, their only other victory came in the first leg of the 1996/97 UEFA Cup Winners' Cup semi-final, a 3-0 home triumph over Liverpool FC setting up a 3-2 aggregate win. In the final they lost 1-0 to FC Barcelona. On their last cross-Channel trip they drew 0-0 at Manchester City FC in the 2008/09 UEFA Cup group stage.
• Chelsea are looking to book their place in a seventh semi-final in 11 campaigns. They reached this stage with a 2-0 home win against Galatasaray AŞ, securing a 3-1 aggregate success in the last 16.
• The Blues have won seven of the 12 UEFA competition ties in which they have had a first-leg deficit to retrieve at Stamford Bridge, most recently against FC Steaua Bucureşti in last season's UEFA Europa League round of 16 (0-1 away, 3-1 home). They famously ousted SSC Napoli 4-1 after extra time in the 2011/12 UEFA Champions League round of 16 second leg – having lost 3-1 away – en route to lifting the trophy, though that was their sole successful attempt to overhaul a first-leg away defeat by a two-goal margin or more. On the only other occasion they lost 3-1 away from home, Monaco earned a 2-2 draw in London in the 2003/04 UEFA Champions League semis.
• Of the 11 seasons in which they have come through the group stage, Chelsea have topped their section eight times, including this term. They lost home and away to FC Basel 1893 but won their four other fixtures without shipping a goal, beating Steaua Bucureşti 4-0 away and 1-0 at home and FC Schalke 04 3-0 home and away.
• The Basel defeat was Chelsea's solitary reverse in 17 European home games, with 14 victories in that sequence.
• Mourinho, who also captured the UEFA Champions League with Inter (2010), is bidding to become the first manager to win the European Cup with three different teams. Only Bob Paisley (Liverpool 1977, 1978, 1981) has collected the trophy three times as a coach.
• Mourinho has never lost a European quarter-final, winning seven UEFA Champions League ties and one UEFA Cup last-eight contest.
• Chelsea are out to land a European trophy for the third season running having added the UEFA Europa League last season to their 2011/12 UEFA Champions League crown.
• Paris are in the quarter-finals for the second successive campaign – and just the third time in all. A year ago at this juncture they drew 2-2 at home to Barcelona and 1-1 at the Camp Nou, going out on away goals.
• In this term's round of 16, a 4-0 triumph at Bayer 04 Leverkusen heralded a comfortable Paris victory. They won the return 2-1.
• The success at Leverkusen continued a pattern of impressive goalscoring form on the road in this season's competition – in Group C Blanc's team prevailed 4-1 at Olympiacos CF, 5-0 at RSC Anderlecht, and lost for the only time in the pool 2-1 at SL Benfica.
• Paris have won six of their last 11 UEFA Champions League away matches, losing just two.
• Paris's other European Cup semi-final appearance came in 1994/95 when they succumbed 3-0 on aggregate to AC Milan.
• The French side have won 11 of 14 European ties in which they won the first leg at home, and have won three of the four in which that initial margin of victory was two goals. The sole exception was against KSV Waterschei in the 1982/83 European Cup Winners' Cup quarter-finals, when they won 2-0 at home but lost 3-0 in Belgium.
• Chelsea's shoot-out record in UEFA competition is:
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
• Paris's shoot-out record is:
3-4 v Rangers FC, 2001/02 UEFA Cup third round
• Alex made 135 outings for Chelsea between 2007 and 2012, scoring ten times. He joined in 2004 but spent three seasons loaned to PSV Eindhoven before returning to Stamford Bridge, earning a UEFA Champions League runners-up medal in 2008. He won the 2009/10 Premier League and the FA Cup in both 2009 and 2010. He signed for Paris in January 2012.
• Other players who have served both clubs include Claude Makelele, Nicolas Anelka and Mateja Kežman.
• In 2010/11 Eden Hazard picked up the French Cup after LOSC Lille's 1-0 victory over Paris and then a week later played in a 2-2 draw at Parc des Princes which gave LOSC the French double for the first time since 1946. He lost just one of nine Ligue 1 games against Paris, scoring in a 2-1 home success in April 2012.
• At LOSC Hazard was a team-mate of Yohan Cabaye and Lucas Digne.
• César Azpilicueta played for Marseille between 2010 and 2012, winning only one of his three encounters with Paris: a 3-0 victory in November 2011 in which he helped set up one of the goals.
• Petr Čech represented Stade Rennais FC between 2002 and 2004, winning one of four league meetings with Paris.
• Demba Ba began his career at FC Rouen and was a colleague of Cabaye at Newcastle United FC. The Paris midfielder was on Tyneside between 2011 and 2014, scoring 18 goals in 93 appearances and playing in two home wins against Chelsea and one victory at Stamford Bridge. He was twice on the losing side against the Blues.
• Zoumana Camara spent 2003/04 on loan at Leeds United AFC from RC Lens, making 15 outings and scoring once.
• Mourinho signed Thiago Motta for Inter in July 2009 when he became a team-mate of Samuel Eto'o. Ibrahimović had spent 2008/09 working under the Portuguese coach, netting 25 goals to finish as Serie A top scorer as Inter were champions.
• Oscar was on target in Brazil's 3-0 friendly success over a France side containing Blaise Matuidi and Cabaye on 9 June 2013 in Porto Alegre.
• Thiago Silva, Lucas and Marquinhos are Brazil team-mates of David Luiz, Oscar and Ramires.
• Blanc was at Barcelona in 1996/97 when Mourinho was working alongside the club's coach Bobby Robson. He ended his playing days at Manchester United FC between 2001 and 2003, figuring in 3-0 wins for both away teams when up against Chelsea in his first season and a 2-2 draw at Stamford Bridge in his second.