ROME (AP) Serie A leader Inter Milan was beaten 1-0 by Sassuolo with a last-minute penalty on Sunday.
Domenico Berardi converted the decisive spot kick five minutes into added time after Inter defender Joao Miranda was shown a yellow card for a foul on Gregoire Defrel.
In an entertaining match at the San Siro, both sides produced numerous chances and goalkeepers Samir Handanovic and Andrea Consigli were superb.
Inter remained one point ahead of Napoli, which was visiting Frosinone later.
Fiorentina is third, level on points with Napoli, after losing 3-1 to Lazio on Saturday.
In the 19th round of the 38-match season, Juventus also had a chance to take the symbolic halfway or ''winter'' title when it visited Sampdoria later seeking its ninth consecutive win.
Juventus was three points back.
