Marcus Thuram was key to Inter's win at a soaking Stadio Olimpico in Rome as, with his team trailing at half-time, the France attacker made it two goals each shortly after the break and forced the Angelino own goal which put Inter ahead in the 56th minute. Alessandro Bastoni finished Roma off in stoppage time after finishing off a counter-attack as the hosts pushed for a leveller.
It was the second week in a row that Thuram had made an opposing player push the ball into his own net after Federico Gatti's own goal in last weekend's win over closest rivals Juventus.
Inter have won seven straight matches in all competitions as they aim to beat local rivals AC Milan to a 20th league title, with both teams stuck on 19.