Klopp challenges slumping Liverpool stars: Show me you're 'world class' Unknown 00:39 Occasionally brilliant performances do nothing to prove world-class credentials, the Liverpool boss has warned his players Share this Share on FacebookTweet on TwitterPlus on Google+ Related PostsS.S.P. Chawrasia shoots 65, leads by 1 at Hong Kong OpenEngland players not sharing match fees with Samoa playersHigh-profile rugby league player tests positive for cocaineNoah cuts Mahut for Davis Cup final vs. BelgiumWorld Cup draw is without 10 of top 32 in new FIFA rankingsProtests, criticism overshadow Chinese friendlies in Germany
