Liverpool suffered a 2-0 loss to Napoli in Italy as the defence of their Champions League title got off to a disappointing start. The visitors couldn’t break down the Italians, and will feel undone by the referee’s decision to award the hosts a penalty after Andy Robertson was deemed to have tripped Jose Callejon in the box. Despite the controversial nature of the call, it was ratified by the VAR, and Dries Mertens squeezed his penalty past Adrian in the 82nd minute. Fernando Llorente struck late on following a usual error from Virgil van Dijk, but Liverpool had their own chances and should have scored had it been they were clinical enough.