Had little to do in the first-half as Napoli failed to hit the target from a number of good opportunities, but made a terrific stop from Inler shortly into the second period.
One quick break and slick pass into Cassano aside, he was too heavily involved in his side's attacking play, but held his position well as Inter soaked up possession late on.
Was one the of the Japan international's quieter evenings, but he did well defensively against a dynamic Napoli.
Was solid throughout, kept tight to Cavani as the Uruguayan drifted along the line, and did well to pick up runners from midfield when necessary.
The bionic man. His performance was typified by a late surge in which he ran the length of the field before winning a corner to relieve the pressure on his side.
Continues to improve following some indifferent form in a Brazil shirt, and dealt extremely well with high balls into the Inter box.
Dropped into the back three and brought a calm to his side's defence that has been missing in recent weeks.
Displayed his fine ability to strike the ball with a superbly controlled volley to give his side an early lead.
Against his former club, the little Uruguayan was combative and while Hamsik burst beyond him, he did well to the limit space between the lines.
Inter's top scorer this season, the Argentine took his goal well at a time when his team looked to be losing momentum.
Delivered a wonderful deep corner to pick out Guarin as Inter took the lead, but did not quite recover from an early knock before being withdrawn in the second-half.
M. De Sanctis
Having got a hand to the ball, he should have stopped Milito's shot shortly before the break.
Caught an early smack in the nose from Cassano, and was withdrawn at half-time following a quiet first-half.
Made a superb tackle when Cassano burst into the box in the first-half, and adjusted well to the switch to four at the back.
Should have drawn his side level at the end but wasted his free header.
The Colombian was typically dynamic but need to contribute more going forward as Napoli went in search of an equaliser.
Dealt with Milito's movement and repeatedly denied Inter the chance to counter as the game wore one, but got caught on the wrong side as the Argentine put Inter two up shortly before half-time.
Repeatedly broke forward from the tip of the midfield and went close in the opening period, but will be largely disappointed with his contribution before being withdrawn late on.
Almost had his side level with a fine strike shortly after the break, but was withdrawn shortly before the hour mark after failing to impose himself on the game.
The Switzerland international increasingly looked to break beyond Inter's midfield and did not shirk away from the midfield battle.
Floating around Cavani, the Italy international constantly looked to commit defenders and caused Inter problems whenever in possession in the final third.
Has scored over a third of his side's Serie A goals this season, was a threat throughout, and got his team back into the game shortly after the break.
- 16 G. Mesto
Replaced Inler with a third of the game remaining, but failed to make a significant impact as his side chased the game.
Came on at half-time against his former club and made an immediate impact, hitting the crossbar before the ensuing scramble saw Cavani hammer home.