Sampdoria completed an extraordinary comeback from 2-0 down to 2-2, the first time Juventus had conceded two in as many minutes at home in over a decade.
The Bianconeri had seemed comfortable after Gleison Bremer and Adrien Rabiot headers, both resulting from corner kicks.
However, there was a sudden surge to get back on level terms with first Tommaso Augello and then Filip Djuricic.
Just over a minute divided the goals, so it’s the first time since a 2-2 draw with Chievo on May 9, 2011 that Juventus have conceded two Serie A goals in two minutes on home turf.
Those were scored by Fernando Uribe and Gennaro Sardo.