Cagliari held the high-flyers 0-0 last night.
"We had a lot of chances," De Rossi told Sky Sport Italia after the match at Stadio Olimpico. "I don't think we can complain though.
"We created so many chances, but you can see that there are no problems from an offensive point of view.
"We tried right until the final whistle. We can't complain though.
"We're six points ahead of fourth place, and the goal has always been the Champions League."
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