Jonny Gray was one of eleven Warriors to feature at Murrayfield and Glasgow's co-captain put in another powerful display as Scotland beat Argentina 19-16 with the last kick of the game.
In Florence, Simone Favaro also walked away with the Man-of-the-Match award as Italy posted a 20-18 win over South Africa.
In Spain, two Warriors went head-to-head as Langilangi Haupeakui's USA faced off against Sila Puafisi's Tonga with the Pacific Islanders winning a tight contest 17-20.
Djustice Sears-Duru was also in action, the prop starting for Canada in their 21-16 defeat to Romania in Bucharest.