Wales made it two wins out of two in their June internationals as they came from behind to defeat Samoa 19-17 at Apia Park on Friday.
Two tries from Steff Evans proved the difference while Sam Davies slotted three penalties as the Samoans came up just short at home.
Alapati Leiua and Maatulimanu Leiataua did cross for the islanders but they couldn't bounce back from last week's loss to New Zealand.
Conditions were difficult in Apia following a heavy downpour but it didn't stop Samoa from opening the scoring inside four minutes when wing Leiua slid over on the right after a long cut-out pass. Tusi Pisi was on-target from the touchline as Samoa went 7-0 in front.
Wales couldn't get their hands on the ball early on and when Pisi landed a penalty on 11 minutes, they were 10-0 down and deservedly so.
Soon after, however, they got on the board through the reliable Davies with his first of three first-half penalties, this one from range.
The Ospreys fly-half further reduced the margin on 20 minutes following an offside from the hosts, who now led 10-6 as the game underwent a shift in momentum.
Try-scoring opportunities were few and far between at this point, with only another Davies shot troubling the board going into the break.
That all changed after the turnaround though as, like Samoa in the first, Wales struck early. The try came thanks to back-row Aaron Shingler charging down Pisi's attempted clearing kick and from the recycled ball, quick hands from prop Dillon Lewis allowed Evans to dive over.
Despite Davies being unable to add the two due to the width of a post, Wales did have the lead for the first time at 14-10 to the good.
Their advantage didn't last long in Apia as a smart run from scrum-half Kahn Fotuali'i through a ruck led to hooker Leiataua going over wide on the left. With fly-half Pisi's touchline conversion, despite his slip while striking, the islanders were back in front at 17-14.
Samoa missed the chance to make it a six-point advantage on 65 minutes as Pisi was wayward with a difficult penalty after a maul collapse.
And it came back to haunt them with six minutes remaining as sustained pressure on the Samoan line again led to quick hands out to wing Evans, whose rich vein of form continued with his second try of the contest. Despite Davies' missed conversion Wales held on to win 19-17.
The scorers:
For Samoa:
Tries: A Leiua, Leiataua
Cons: Pisi 2
Pen: Pisi
For Wales:
Tries: Evans 2
Pens: S Davies 3
Samoa: 15 D'Angelo Leuila, 14 Alapati Leiua, 13 Kieron Fonotia, 12 Rey Lee-Lo, 11 David Lemi (c), 10 Tusi Pisi, 9 Kahn Fotuali'i, 8 Fata Alafoti Faosiliva, 7 Galu Taufale, 6 Piula Faasalele, 5 Faatiga Lemalu, 4 Chris Vui, 3 Paul Alo-Emile, 2 Maatulimanu Leiataua, 1 Viliamu Afatia
Replacements: 16 Seilala Lam, 17 Nephi Leatigaga, 18 Bronson Fotualii-Tauakipulu, 19 Faifili Levave, 20 Vavae Tuilagi, 21 Dwayne Polataivao, 22 Henry Taefu, 23 Tila Mealoi
Wales: 15 Gareth Anscombe, 14 Cory Allen, 13 Tyler Morgan, 12 Jamie Roberts (c), 11 Steffan Evans, 10 Sam Davies, 9 Aled Davies, 8 Josh Navidi, 7 Ellis Jenkins, 6 Aaron Shingler, 5 Rory Thornton, 4 Seb Davies, 3 Dillon Lewis, 2 Ryan Elias, 1 Nicky Smith
Replacements: 16 Scott Baldwin, 17 Wyn Jones, 18 Rhodri Jones, 19 Adam Beard, 20 Thomas Young, 21 Tomos Williams, 22 Owen Williams, 23 Scott Williams
Referee: Marius van der Westhuizen (South Africa)
Assistant Referees: Mike Fraser (New Zealand), Rohan Hoffmann (Australia)
USA take on Canada on June 24 in Hamilton, Ontario, and on July 1 in San Diego, California, as they look to book a spot in the tournament.
Canada kicked three penalties from Gordon McRorie but also had two tries disallowed in a fierce game that saw a red card and two yellows.
Tries from Charlie Ewels, Piers Francis, Danny Care and Will Collier helped them to the success, with George Ford contributing 15 points.
The Springboks have now taken an unassailable 2-0 lead in the series after last week's 37-14 victory in Pretoria with the final match to take place next weekend in Johannesburg.
Leigh Halfpenny finished with 20 points as the Lions scored second half tries through a penalty try and second-row Maro Itoje, having completely dominated after half-time as the Maoris failed to add any points.
Keith Earls, Dan Leavy and Jack Conan all finished with braces for Joe Schmidt's side, with Garry Ringrose the other try scorer for Ireland.
The last five Tests between these sides were decided by six points or less and, as the scoreline suggests, this one was no different with this result being Scotland's first-ever triumph over the Wallabies in Sydney.
Facing each other for the first time since 2014, when Fiji also won in Suva, the contest went right down to the wire as Fiji outscored the visitors by three tries to one.
Tries from Anton Lienert-Brown, Beauden Barrett, Ardie Savea and Sonny Bill Williams gave New Zealand a comfortable 28-0 lead, at the end of a first half where Samoa had big chances to score but failed to capitalise, not to mention being on the wrong side of a contention decision for the first try.
Despite what the scoreline suggests, this was a tight affair and the result was in the balance until late in the game. Wales eventually outscored their opponents by two tries to none but they battled to cope with Tonga's physicality, especially in the forward exchanges.
The game was played in extremely windy and rainy conditions and served as a precursor to the Rugby World Cup qualifiers later this month.
As the scoreline suggests, Ireland dominated for large periods and they eventually outscored their hosts by nine tries to three with Keith Earls leading the way with a brace scored in the first half.
A loose, entertaining contest full of running, it was Argentina who led at half-time thanks to tries from Emiliano Boffelli and Tomás Lavanini, plus a Nicolás Sánchez penalty, with Marland Yarde crossing for England as the score stood at 17-13.
Tries from Ali Price, Tim Visser, Damien Hoyland and a brace from Ross Ford proved too much for Italy, who scored through tries from Michele Campagnaro and Angelo Esposito.
Tries from Akihito Yamada, Kenki Fukuoka and Michael Leitch saw them to the success, with Jumpei Ogura kicking 18 points from the tee.
Tries from Israel Folau (2), Henry Speight (2) and Stephen Moore saw them to victory, with Bernard Foley kicking 12 points in a slick showing.
Only one try was scored in the game and it went the way of Irish lock Iain Henderson, as the hosts held on for a morale-boosting success.
A 20-minute spell on the Welsh line was the conclusion to this fixture as Camille Chat's try, converted by Camille Lopez, saw France win.
The home side were full value for their win as they dominated for large periods — especially during the first half — although Italy will be disappointed with their effort and poor goalkicking from Carlo Canna, who failed to convert three penalties in the first half, meant they failed to score any points.