Liverpool's Spanish defender Álvaro Arbe

Liverpool's Spanish defender Álvaro Arbeloa (L) beats Chelsea's English midfielder Frank Lampard to the ball during their UEFA Champions League quarter final second leg football match at Stamford Bridge in London, England on April 14, 2009. Guus Hiddink admits Chelsea cannot afford a repeat of their epic Champions League quarter-final second leg against Liverpool when they face Barcelona in the semi-finals. Hiddink's side reached the last four after surviving one of the most dramatic matches in the history of Europe's elite club competition at Stamford Bridge on Tuesday. AFP PHOTO/PAUL ELLIS (Photo credit should read PAUL ELLIS/AFP via Getty Images)