Former Roma midfielder Gigi Di Biagio insists they're capable of upsetting Napoli.
Roma meet the Serie A leaders on Sunday night.
Di Biagio said: "You mustn't let your opponents get too familiar, especially (Lorenzo) Pellegrini, who is very strong and is the symbol of Roma.
"He's not valued as he should. However, (Luciano) Spalletti's team can no longer hide, Inter and Milan can't worry about them, they can't keep up with their pace.
"They've changed their mentality and now do not stumble with the small teams."