Fabio Simplicio's brace seemed to give Roma a win, but Chievo fought back for a draw.
The conditions were decisive in the end, as the final goal came about when Rodrigo Taddei made a foul throw. From that move, the Flying Donkeys then created their strike.
"The line from the rugby pitch here was visible, but nobody noticed. I did and so did the fourth official, so I was shouting for Taddei to come back," explained Ranieri.
"Unfortunately these things should not happen and playing on this pitch was impossible. We could not do more on this surface."
"Evidently the north end of the pitch was in better condition, as both teams struggled when attacking in that area. It was just impossible to put together any kind of decent move on the south end.
"We had taken the lead and played very well, even though on this surface it was more like playing beach soccer. I have to be thankful that nobody got hurt today, as there was a real risk for all 22 players out there."