Watch as Empoli held out under siege, conceded to a deflected Sassuolo strike, but then turned it around late on to win with the last kick of the game.
The Neroverdi were fresh from a last-gasp win away to Juventus and had numerous chances even after Hamed Junior Traore’s effort took a deflection off Lorenzo Tonelli to wrong-foot the goalkeeper.
They were made to rue the wasted opportunities by Traore, Gianluca Scamacca, Gregoire Defrel and Jeremie Boga, as Vlad Chiriches brought down Patrick Cutrone for Andrea Pinamonti’s penalty.
Empoli won it at the death when Liam Henderson rolled across for Szymon Zurkowski’s rocket off the underside of the bar.