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 PostsUS Open 2018: With recharged batteries, comeback kings Novak Djokovic, Juan Martin Del Potro to fight for gloryGermany defender Mats Hummels to miss international friendly against Peru; Nico Schulz and Julian Brandt to startUEFA Nations League: England defender Kieran Trippier says team must not panic after defeat to SpainUS Open 2018: Four surgeries later, Juan Martin del Potro meets Novak Djokovic in final at Flushing MeadowsIndia's outing in Asian Games deserves to be celebrated, but need to temper expectations from 2020 Tokyo OlympicsISSF World Championships: Ankur Mittal trains his guns on success in trap shooting after signing off double trap career on a high
