Fly-half Steffan Jones kicked Newport Gwent Dragons to victory at Pro12 bottom and winless club Zebre after the visitors fell 13-3 down.
Home stand-off Alberto Chillon kicked an early penalty and centre Matteo Pratichetti went over in the 39th minute for the fly-half to convert.
Chillon added a second penalty soon after the break to put his side 10 points ahead at Stadio XXV Aprile.
But Jones kicked penalties either side of Jevon Groves' try to seal the win.
Zebre threatened to add to the Dragons' problems as they built their 10-point lead.
The visitors also had props Nathan Buck and Phil Price sin-binned.
Buck received his early rest in the 33rd minute. And has his time on the sidelines ended, Price went the other way.
But despite the shortfall in numbers, the Dragons were able to claw their way back into the contest.
After Chillon kicked his second penalty, the visitors had it all to do.
Jones gave them hope as he kicked a 56th-minute penalty and lock Groves went over five minutes later.
The Dragons pivot missed the conversion, but hit the mark with 16 minutes remaining.
And he and his team-mates held on to secure a hard-fought and tense victory.
Zebre: Alberto Benettin; Leonardo Sarto, Samuele Pace, Matteo Pratichetti, Sinoti Sinoti; Alberto Chiesa, Alberto Chillon; Matias Aguero, Carlo Festuccia, Luca Redolfini, Michael van Vuren, Marco Bortolami (capt), Filippo Ferrarini, Josh Sole, Andries van Schalkwyk
Replacements: Andrea Manici, Andrea de Marchi, Carlo Fazzari, Emiliano Caffini, Filippo Cristiano, Guglielmo Palazzani, Paolo Buso, Andrea Bacchetti.
Dragons: Dan Evans; Adam Hughes, Pat Leach, Ashley Smith, Hallam Amos; Steffan Jones, Wayne Evans; Phil Price, Hugh Gustafson, Nathan Buck, Ian Nimmo, Jevon Groves, Lewis Evans (capt), Nic Cudd, Ieuan Jones
Replacements: Sam Parry, Owen Evans, Dan Way, Rob Sidoli, Adam Jones, Jonathan Evans, Tom Prydie, Jack Dixon.
Referee: Leo Colgan (IRFU)
Assistant Referees: Andrea Spadoni, Simone Boaretto (both FIR)
Citing Commissioner: Roberto Carra (FIR)
TMO: Alan Falzone (FIR)