Samir Handanovic's late penalty save rescued a point for Inter as the Serie A leaders laboured to a 1-1 draw against Atalanta at San Siro.
Lautaro Martinez combined wonderfully with strike partner Romelu Lukaku to score his 15th goal of the season in the fourth minute but Antonio Conte's side were then largely outplayed by a typically ambitious Atalanta.
Martinez was fortunate not to concede a spot-kick when he impeded Rafael Toloi towards the end of the first half, while substitute Ruslan Malinovskiy rattled the upright after the restart.
Robin Gosens poached a deserved equaliser 15 minutes from time and only Handanovic's heroics from Luis Muriel's 88th-minute effort from the spot denied Atalanta the victory.