Chelsea, Real Madrid, Paris St Germain and Borussia Dortmund all in action
Chelsea goalkeeper Petr Cech points to his teammates during the Champions League quarter-final second leg soccer match between Chelsea and Paris Saint Germain at Stamford Bridge stadium in London, Tuesday, April 8, 2014.Matt Dunham/The Associated Press
Real goalkeeper Iker Casillas stands during the Champions League quarter-final second leg soccer match between Borussia Dortmund and Real Madrid in the Signal Iduna stadium in Dortmund, Germany, Tuesday, April 8, 2014.Martin Meissner/The Associated Press
Paris Saint-Germain's Thiago Silva, right jumps to control the ball as Chelsea's Willian comes in to challenge during the Champions League quarterfinal second leg soccer match between Chelsea and Paris Saint Germain at Stamford Bridge stadium in London, Tuesday, April 8, 2014.Matt Dunham/The Associated Press
Borussia Dortmund's Marco Reus, left, scores a goal past Real Madrid's Sergio Ramos, centre, and goalkeeer Iker Casillas, right, during their Champions League quarter-final second leg soccer match in Dortmund, April 8, 2014.WOLFGANG RATTAY/Reuters
Chelsea's David Luiz, right and Chelsea's Willian, centre, challenge Paris St Germain's Ezequiel Lavezzi during their Champions League quarter-final second leg soccer match at Stamford Bridge in London, April 8, 2014.DYLAN MARTINEZ/Reuters
Chelsea's Gary Cahill, third right, heads the ball towards goal during the Champions League quarter-final second leg soccer match between Chelsea and Paris Saint Germain at Stamford Bridge stadium in London, Tuesday, April 8, 2014.Matt Dunham/The Associated Press
Paris St Germain's goalkeeper Salvatore Sirigu looks on as Chelsea's Andre Schuerrle scores the first goal for the team during their Champions League quarter-final second leg soccer match against Paris St Germain at Stamford Bridge in London, April 8, 2014.DYLAN MARTINEZ/Reuters
Dortmund's Henrikh Mkhitaryan fights for the ball with Real's Gareth Bale, right, during the Champions League quarter-final second leg soccer match between Borussia Dortmund and Real Madrid in the Signal Iduna stadium in Dortmund, Germany, Tuesday, April 8, 2014.Martin Meissner/The Associated Press
Chelsea's Samuel Eto'o, left, falls after a tackle on Paris Saint-Germain's Thiago Silva, who he could in the tackle, during the Champions League quarterfinal second leg soccer match between Chelsea and Paris Saint Germain at Stamford Bridge stadium in London, Tuesday, April 8, 2014.Matt Dunham/The Associated Press
Borussia Dortmund's goalkeeper Roman Weidenfeller saves a penalty shot by Real Madrid during their Champions League quarter-final second leg soccer match in Dortmund, April 8, 2014.INA FASSBENDER/Reuters
Paris Saint-Germain's Edinson Cavani, centre, is shown a yellow card by ref free Pedro Pronca, as Chelsea's John Terry. left looks on during the Champions League quarter-final second leg soccer match between Chelsea and Paris Saint Germain at Stamford Bridge stadium in London, Tuesday, April 8, 2014.Matt Dunham/The Associated Press
Paris Saint-Germain's Thiago Silva holds his ankle after a challenge by Chelsea's Samuel Eto'o during the Champions League quarter-final second leg soccer match between Chelsea and Paris Saint Germain at Stamford Bridge stadium in London, Tuesday, April 8, 2014.Matt Dunham/The Associated Press
Dortmund's Marco Reus, second right, scores his side's second goal during the Champions League quarter-final second leg soccer match between Borussia Dortmund and Real Madrid in the Signal Iduna stadium in Dortmund, Germany, Tuesday, April 8, 2014.Frank Augstein/The Associated Press
PSG's Marco Verratti, left, is airborne as he goes for the ball with Chelsea's Samuel Eto'o during the Champions League second leg quarter-final soccer match between Chelsea and Paris Saint-Germain at Stamford Bridge Stadium in London, Tuesday, April 8, 2014.Kirsty Wigglesworth/The Associated Press
Chelsea's Willian, right, challenges Paris St Germain's Blaise Matuidi during their Champions League quarter-final second leg soccer match at Stamford Bridge in London, April 8, 2014.STEFAN WERMUTH/Reuters
Borussia Dortmund's Marco Reus, centre, scores a goal against Real Madrid during their Champions League quarter-final second leg soccer match in Dortmund, April 8, 2014.KAI PFAFFENBACH/Reuters
Chelsea's Andre Schuerrle, right, celebrates with team mate Chelsea's Cesar Azpilicueta after scoring the first goal for the team during their Champions League quarter-final second leg soccer match against Paris St Germain at Stamford Bridge in London, April 8, 2014.STEFAN WERMUTH/Reuters