Samoan flyhalf Tusi Pisi landed five penalties to get Samoa home 15-0 over Italy in a tryless international in Apia on Saturday.
It was a face-saving performance for Samoa, after a sub-par 18-all draw with Tonga last week - while it ended a disappointing swing through the Pacific for Italy.
The Six Nations side had hoped for a redeeming performance after losing 14-25 to Fiji last week.
Instead they paid the price for repeated infringements within kicking range of the Japan-based Pisi.
He landed four penalties in the first half and one in the second to score all the points in the match.
It was the fifth time Samoa have beaten Italy in the six times they have met.
Pens: Pisi 5
Samoa: 15 Faatoina Autagavaia, 14 Fautua Otto, 13 George Pisi, 12 Alapati Leiua, 11 David Lemi (captain), 10 Tusiata Pisi, 9 Kahn Fotuali'i, 8 Kane Thompson, 7 Jack Lam, 6 Ofisa Treviranus, 5 Daniel Leo, 4 Faatiga Lemalu, 3 James Johnston, 2 Ti'i Paulo, 1 Logovi'i Mulipola.
Replacements: 16 Wayne Ole Avei, 17 Census Johnston, 18 Sakaria Taulafo, 19 Maurie Fa'asavalu, 20 Piula Fa'asalele, 21 Patrick Fa'apale, 22 Vavao Afemai, 23 Johnny Leota.
Italy: 15 Luke McLean, 14 Angelo Esposito, 13 Andrea Masi, 12 Gonzalo Garcia, 11 Giovambattista Venditti, 10 Tommaso Allan, 9 Tito Tebaldi, 8 Robert Barbieri, 7 Mauro Bergamasco, 6 Paul Derbyshire, 5 George Fabio, 4 Quintin Geldenhuys (c), 3 Lorenzo Cittadini, 2 Leonardo Ghiraldini, 1 Alberto de Marchi.
Replacements: 16 Andrea Manici, 17 Matias Aguero, 18 Dario Chistolini, 19 Marco Bortolami, 20 Josh Furno, 21 Guglielmo Palazzani, 22 Luciano Orquera, 23 Tommaso Iannone.
Referee: George Clancy (Ireland)
Assistant referees: Andrew Lees (Australia), James Leckie (Australia