• Barcelona have scored 797 goals in UEFA competition.
• Lionel Messi became the first player to score five goals in a UEFA Champions League match in the round of 16 second leg against Bayer 04 Leverkusen.
UEFA Champions League statistics
• Barcelona scored 20 goals in the group stage, equalling a record set by Manchester United FC in 1998/99; their 11-match total of 33 goals is the joint highest total in this season's competition along with Real Madrid CF.
• The holders have had 99 shots wide and won 66 corners, the highest totals in the competition; they have committed 105 fouls and collected 15 yellow cards, both fewer than any other side in the last four.
• Messi is the competition's top scorer with 14 goals, setting a new record for a UEFA Champions League season. The previous best was 12, set by Ruud van Nistelrooy in 2002/03 and matched by Messi last term.
• Messi has also had more shots on goal (35) and more attempts off target (28) than any other player.
• Carles Puyol and Javier Mascherano's next bookings will incur a suspension.
Latest domestic information
• Saturday 21 April: FC Barcelona 1-2 Real Madrid CF (Sánchez 70; Khedira 17, Ronaldo 73)
Valdés; Alves, Mascherano, Puyol, Adriano (Pedro 74); Xavi (Sánchez 69), Busquets, Thiago; Tello (Fàbregas 81), Messi, Iniesta.
• The Blaugrana's 54-game unbeaten run at the Camp Nou, since a 2-0 loss to Hércules CF on 11 September 2010, came to an end. The result leaves them seven points adrift of Liga leaders Madrid with four games to play.
• Josep Guardiola made two changes to the side that started at Chelsea, with Thiago Alcántara and Tello coming in for Alexis Sánchez and Cesc Fàbregas.
• Defeats by Chelsea and Madrid consigned Barcelona to their first back-to-back losses since May 2009.
• The Catalan side had lost just twice in 62 games before the first leg at Stamford Bridge.
• Guardiola's side had won 11 in a row in the Liga before Saturday.
• Messi has scored 29 goals in his last 17 appearances for club and country and 68 in 61 games this term; his 63 for Barcelona is ten more than he managed in 2010/11.
• Messi's 41 Liga goals this season means both he and Cristiano Ronaldo (42) have surpassed the Real Madrid forward's Liga record of 40 set last term.
• The 24-year-old became Barcelona's leading scorer on 20 March, moving two goals beyond César Rodríguez (232).
• Barça have scored 168 goals in all competitions this term, 16 more than in the whole of last season.
• Xavi Hernández has scored 14 goals this season in all competitions; his previous best was ten, set in 2008/09.
• Guardiola's charges will play Athletic Club in the Copa del Rey final in Madrid on 25 May.
• Barça have won three trophies this season: the UEFA Super Cup (2-0 v FC Porto), Spanish Super Cup (5-4 on agg v Real Madrid) and FIFA Club World Cup (4-0 v Santos FC).
• Alexis Sánchez went off with a thigh knock in the first leg but came on as a second-half substitute against Madrid.
• Gerard Piqué has not featured since straining his left thigh against AC Milan on 3 April, but has been an unused substitute for Barcelona's last three games.
• Éric Abidal underwent a liver transplant on 10 April.
• Ibrahim Afellay, who suffered a knee ligament injury in September, is available again.
• David Villa could miss the rest of the season after breaking his left leg at the Club World Cup on 15 December.
• Andreu Fontàs will not feature until 2012/13 after tearing knee ligaments on 12 January.
• Chelsea have conceded 94 goals in both the UEFA Champions League, group stage to final, and the European Cup.
UEFA Champions League statistics
• Chelsea have scored fewer goals than any other semi-finalist with 22, and conceded the most with nine.
• Branislav Ivanović, David Luiz, Ashley Cole, Ramires and Raul Meireles will incur bans with their next yellow cards.
Latest domestic information
• Saturday 21 April: Arsenal FC 0-0 Chelsea FC
Čech; Bosingwa, Cahill, Terry, Bertrand (Cole 77); Romeu (Mikel 66), Essien, Malouda; Sturridge, Torres, Kalou (Mata 74).
• Arsenal twice hit the woodwork in a draw that means Chelsea have won only six of their last 19 league fixtures.
• Roberto Di Matteo made eight changes to the side that beat Barcelona, with only Petr Čech, John Terry and Gary Cahill retaining their places. Cole came on for his 350th league appearance.
• The Blues are unbeaten in nine games in all competitions, winning six.
• Eighteen of the 38 league goals Chelsea have conceded this season have come in the final 15 minutes.
• Chelsea have scored in 20 of their 26 away matches in all competitions this season and are unbeaten in their last four.
• The Blues have failed to convert five of their ten spot kicks this season.
• Chelsea dismissed manager André Villas-Boas on 4 March. His assistant Di Matteo was placed in charge until the end of the season and has overseen ten victories, three draws and a 2-1 loss at Manchester City FC.
• Frank Lampard this season became the first player to score ten or more in nine successive Premier League campaigns with his goal against Bolton Wanderers FC on 25 February.
• Daniel Sturridge has scored ten Premier League goals this season, two more than his previous best return set while on loan at Bolton last term.
• Fernando Torres scored twice in a 5-2 home win against Leicester City FC in the FA Cup quarter-finals on 18 March, ending a run of 24 club matches without a goal.
• Chelsea, who have lifted the FA Cup in three of the past five seasons, will face Liverpool FC in the final on 5 May.
• Didier Drogba missed the Arsenal game with a knee problem.
• Ryan Bertrand (calf) and Oriol Romeu (illness) returned to action on Saturday after minor problems.
• Luiz has missed Chelsea's last two games with a hamstring injury.
• Terry suffered two cracked ribs in the quarter-final first leg at SL Benfica.
• Sturridge was one of six nominees for the Professional Footballers' Association Young Player of the Year award, won by Tottenham Hotspur FC's Kyle Walker.
• Chelsea signed Kevin De Bruyne from KRC Genk in January, although the winger will spend the rest of the season back on loan at the Belgian club before moving to London in the summer.
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