The Serie A side's boss attributed a frustrating scoreless draw in Serbia to slow ball movement and their opponent's time-wasting tactics
An unimpressed Carlo Ancelotti branded Red Star Belgrade "professionals at time wasting and diving" after Napoli were held to a 0-0 away draw in their Champions League opener.
Napoli dominated possession and twice struck the crossbar without ever putting goalkeeper Milan Borjan under sustained pressure in the Serbian capital on Tuesday.
It made for a frustrating start for Serie A side Napoli, who face a difficult fight to escape Group C, which also includes Liverpool and Paris Saint-Germain.