Thursday's play could also be interrupted with an 80 per cent chance of rain, according to the Australian Bureau of Meteorology. The Russian world No 2 found it hard going against Alexander Zverev, but Medvedev eventually came through 6-3 6-7 (3-7) 7-6 (8-6) in their Red Group clash on Tuesday. Klopp believes Porto's motivation will be enhanced further by the humiliating 5-1 defeat they suffered at home to Liverpool in September, adding that his side can only match their Portuguese opponents with the help of the fans. "I rely on the crowd, I enjoy them and I see sport as entertainment - the crowd are a massive part of that entertainment.