Maurizio Sarri and Juventus were jolted by an uncharacteristic collapse against Milan, but they remain firm favourites for the Scudetto.
Milan star Zlatan Ibrahimovic warned he will leave the Rossoneri unless things change.
A late Miguel Veloso goal prevented Inter from returning to winning ways but Antonio Conte was happy with his side's display.
Antonio Conte's Inter remain fourth in Serie A after being pegged back in the closing minutes by a spirited Hellas Verona side.
Patric will miss Lazio's potentially pivotal clash with Juventus after he was suspended following his red card against Lecce.
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