Mauro Icardi's 17th goal of the season took Inter Milan back into the hunt for a place in Europe next season.
There was victory for Inter Milan over Roma but AC Milan went down to Udinese in Saturday's Serie A fixtures.
Neither side could find the net in the Milan derby, while Roma missed the chance to go second.
Roma missed a chance to reclaim second place in Serie A after being held to a 1-1 draw at home by Atalanta on Sunday.
Roma coach Rudi Garcia goes into Sunday's game against Atalanta with the full support of club president James Pallotta.
Roma surrendered their grip on second place in Serie A to fierce rivals Lazio by struggling through a 1-1 draw at Torino.
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