Manchester United, Atletico, Barcelona and Bayern all in action
Manchester United's Marouane Fellaini, left, goes for a header with Bayern Munich's David Alaba during their Champions League quarter-final first leg soccer match at Old Trafford in Manchester, April 1, 2014.STEFAN WERMUTH/Reuters
Manchester United's Danny Welbeck, centre, challenges for the ball with Bayern's Javier Martinez, right, and Jerome Boateng during the Champions League quarter-final first leg soccer match between Manchester United and Bayern Munich at Old Trafford Stadium, Manchester, England, Tuesday, April 1, 2014.Jon Super/The Associated Press
Manchester United's Nemanja Vidic fights for the ball with Bayern Munich's Thomas Mueller during their Champions League quarter-final first leg soccer match at Old Trafford in Manchester, April 1, 2014.STEFAN WERMUTH/Reuters
Manchester United's Wayne Rooney, left, fights for the ball with Bayern Munich's David Alaba during their Champions League quarter-final first leg soccer match at Old Trafford in Manchester, April 1, 2014.MICHAEL DALDER/Reuters
Manchester United's Nemanja Vidic challenges Bayern Munich's Thomas Mueller during their Champions League quarter-final first leg soccer match at Old Trafford in Manchester, April 1, 2014.STEFAN WERMUTH/Reuters
Manchester United's David de Gea makes a save during their Champions League quarter-final first leg soccer match against Bayern Munich at Old Trafford in Manchester, April 1, 2014.STEFAN WERMUTH/Reuters
Manchester United's Phil Jones challenges Bayern Munich's Franck Ribery during their Champions League quarter-final first leg soccer match at Old Trafford in Manchester, April 1, 2014.STEFAN WERMUTH/Reuters
Bayern Munich's Manuel Neuer kicks the ball past Manchester United's Danny Welbeck during their Champions League quarter-final first leg soccer match at Old Trafford in Manchester, April 1, 2014.STEFAN WERMUTH/Reuters
Barcelona's Lionel Messi, centre, eludes a tackle from Atletico Madrid's Tiago and Jorge "Koke" Resureccion during their Champions League quarter-final first leg soccer match at Camp Nou stadium in Barcelona April 1, 2014.ALBERT GEA/Reuters
Atletico's Diego Costa, centre challenges for the ball with Barcelona's Daniel Alves, top left during a first leg quarter-final Champions League soccer match between Barcelona and Atletico Madrid at the Camp Nou stadium in Barcelona, Spain, Tuesday April 1, 2014.Manu Fernandez/The Associated Press
Barcelona's Sergio Busquets, right, falls in front of Atletico's David Villa during a first leg quarter-final Champions League soccer match between Barcelona and Atletico Madrid at the Camp Nou stadium in Barcelona, Spain, Tuesday April 1, 2014.Emilio Morenatti/The Associated Press
Atletico's Diego Costa leaves the field after getting injured as Diego comes on in his place during a first leg quarter-final Champions League soccer match between Barcelona and Atletico Madrid at the Camp Nou stadium in Barcelona, Spain, Tuesday April 1, 2014.Manu Fernandez/The Associated Press
Barcelona's Andres Iniesta, centre, makes a challenge on goal during a first leg quarter-final Champions League soccer match between Barcelona and Atletico Madrid at the Camp Nou stadium in Barcelona, Spain, Tuesday April 1, 2014.Manu Fernandez/The Associated Press
Atletico Madrid's Diego Costa and Barcelona's Marc Bartra fight for the ball during their Champions League quarter-final first leg soccer match at Camp Nou stadium in Barcelona April 1, 2014.GUSTAU NACARINO/Reuters
Barcelona's Andres Iniesta, left tries a shot on goal during a first leg quarter-final Champions League soccer match between Barcelona and Atletico Madrid at the Camp Nou stadium in Barcelona, Spain, Tuesday April 1, 2014.Manu Fernandez/The Associated Press
Barcelona's Lionel Messi shots a free-kick over Atletico Madrid's (L-R) Tiago, Diego Costa, Joao Miranda, Gabi Fernandez and David Villa during their Champions League quarter-final first leg soccer match at Camp Nou stadium in Barcelona April 1, 2014.GUSTAU NACARINO/Reuters
Barcelona's Neymar, right steers the ball away from Atletico's Koke, led and Filipe Luis during a first leg quarter-final Champions League soccer match between Barcelona and Atletico Madrid at the Camp Nou stadium in Barcelona, Spain, Tuesday April 1, 2014.Manu Fernandez/The Associated Press
Atletico's Diego, center, celebrates after scoring the opening goal during a first leg quarterfinal Champions League soccer match between Barcelona and Atletico Madrid at the Camp Nou stadium in Barcelona, Spain, Tuesday April 1, 2014.Emilio Morenatti/The Associated Press
Bayern Munich's Bastian Schweinsteiger reacts during their Champions League quarter-final first leg soccer match against Manchester United at Old Trafford in Manchester, April 1, 2014.MICHAEL DALDER/Reuters
Manchester United's Nemanja Vidic, centre, scores the opening goal during the Champions League quarter-final first leg soccer match between Manchester United and Bayern Munich at Old Trafford Stadium, Manchester, England, Tuesday, April 1, 2014.Jon Super/The Associated Press
Bayern Munich's Arjen Robben jumps over Manchester United's Alexander Buettner during their Champions League quarter-final first leg soccer match at Old Trafford in Manchester, April 1, 2014.MICHAEL DALDER/Reuters
Bayern Munich's Bastian Schweinsteiger, right, celebrates with Franck Ribery after scoring a goal against Manchester United during their Champions League quarter-final first leg soccer match at Old Trafford in Manchester, April 1, 2014.MICHAEL DALDER/Reuters