Match ends, Inter Milan 0, Sassuolo 1.
Inter Milan slipped to second place in the Serie A table as Sassuolo beat them with a 95th-minute winner from the penalty spot.
The game was heading for a goalless draw when Inter defender Joao Miranda fouled Gregoire Defrel inside the area.
Domenico Berardi netted the penalty to condemn Roberto Mancini's side to a third defeat in six Serie A games.
Sassuolo, who lost the corresponding fixture last season 7-0, are now unbeaten in five league games.
Inter's defeat allowed Napoli to go top with a 5-1 victory over Frosinone.
- 25MirandaBooked at 90mins
- 24MurilloBooked at 34mins
- 33D'AmbrosioBooked at 90mins
- 17MedelSubstituted forGuarínat 90'minutes
- 7KondogbiaSubstituted forJoveticat 86'minutes
- 44PerisicSubstituted forPalacioat 64'minutes
- 5Nunes Jesus
- 28CannavaroBooked at 67mins
- 4MagnanelliBooked at 82mins
- 32DuncanSubstituted forBiondiniat 84'minutes
- 25BerardiBooked at 90mins
- 9FalcinelliSubstituted forDefrelat 72'minutes
- 17SansoneSubstituted forFloro Floresat 81'minutes
- 83Floro Flores
- Daniele Doveri
- Shots on Target
Second Half ends, Inter Milan 0, Sassuolo 1.
Offside, Inter Milan. Rodrigo Palacio tries a through ball, but Adem Ljajic is caught offside.
Danilo D'Ambrosio (Inter Milan) is shown the yellow card.
Goal! Inter Milan 0, Sassuolo 1. Domenico Berardi (Sassuolo) converts the penalty with a left footed shot to the centre of the goal.
Miranda (Inter Milan) is shown the yellow card for a bad foul.
Penalty conceded by Miranda (Inter Milan) after a foul in the penalty area.
Penalty Sassuolo. Gregoire Defrel draws a foul in the penalty area.
Offside, Inter Milan. Yuto Nagatomo tries a through ball, but Adem Ljajic is caught offside.
Corner, Inter Milan. Conceded by Francesco Acerbi.
Attempt saved. Mauro Icardi (Inter Milan) right footed shot from outside the box is saved in the centre of the goal.
Corner, Inter Milan. Conceded by Sime Vrsaljko.
Attempt blocked. Jeison Murillo (Inter Milan) header from the centre of the box is blocked. Assisted by Adem Ljajic with a cross.
Substitution, Inter Milan. Fredy Guarín replaces Gary Medel.
Adem Ljajic (Inter Milan) wins a free kick on the right wing.
Foul by Francesco Magnanelli (Sassuolo).
Corner, Inter Milan. Conceded by Andrea Consigli.
Attempt saved. Stevan Jovetic (Inter Milan) right footed shot from outside the box is saved in the bottom right corner. Assisted by Adem Ljajic.
Attempt missed. Gregoire Defrel (Sassuolo) left footed shot from the centre of the box is too high. Assisted by Domenico Berardi with a through ball.
Foul by Stevan Jovetic (Inter Milan).