Considering the performance his side put in away to Dortmund in the Europa League on Thursday night, you would have expected the German to have once again smiled his way through a post-match press conference, but that was not the case.
The 1-1 result was great, but the Liverpool boss was clearly upset at the injury, which he described as "really bad news", suffered by his captain Jordan Henderson.
It was one minute into the second half when Henderson was forced to withdraw due to a knee injury, which was something no Liverpool fan wanted to see.
Henderson will go for a scan tomorrow, but with Euro 2016 on the horizon it could be very bad news for the midfielder.