Torino rode their luck on several occasions and thanked Salvatore Sirigu, but stunned Benevento in stoppages with Iago Falque.
The Granata threw on new buys M’Baye Niang in a new 4-2-3-1 formation, while Benevento started transfer deadline day arrival Pietro Iemmello.
The kick-off was slightly delayed due to heavy rain and partial floodlight failure.
Adem Ljajic’s volley was charged down, but Joel Obi limped off within 10 minutes due to a muscular problem, making way for Afriyie Acquah.
Salvatore Sirigu flew to palm a curling Amato Ciciretti free kick out from under the bar and at the other end Iago Falque ballooned over from Andrea Belotti’s assist.
Another sensational Ciciretti free kick found Lucioni unmarked in the centre, but he had more time than he realised and rushed the header over.
Vid Belec beat away a Ljajic snapshot and Iemmello beat Sirigu at the by-line, but Cristian Molinaro read the situation to stop Ciciretti tapping into an empty net.
Belec parried another Ljajic solo effort, the goalkeeper bravely smothering the Belotti follow-up.
Sirigu flew for a crucial fingertip save on Massimo Coda’s strike from the edge of the box just before half-time.
Niang tried to chest down a Iago Falque cross when he really could’ve just crouched a little for the header.
Belec had to be on his toes with a spectacular reaction save from point-blank range, as Luca Antei’s sliding attempt to intercept Niang’s cross was about to go into his own net.
There was more bad news for Toro, as substitute Acquah also went off with a muscular problem.
Belotti was at the ready to nod in a Lorenzo De Silvestri cross at the back post, but Venuti made a decisive interception. Benevento wasted two golden opportunities on the counter-attack in quick succession, and Sirigu had to scramble back when caught out of position by George Puscas.
The former PSG goalkeeper got down to smother a sudden Danilo Cataldi daisy-cutter and again at the near post on Achraf Lazaar.
Just as it seemed to be heading for a goalless draw, deep into stoppages, Toro’s forwards combined to break through at the Stadio Vigorito. Ljajic deserves much of the credit for the goal, as he dribbled inwards and placed a perfect through ball that Iago Falque only had to finish off.