The Argentinian teenagers, who beat three-seed Paquito Navarro and Juan Tello on Thursday, proved too mighty for Lucas Campagnolo and Maxi Sanchez in the La Rioja Open 2023 quarter-finals.
Libaak and Augsburger also become the youngest couple to ever make a semi-final, while Libaak individually now holds the record for both the youngest male quarter-finalist and semi-finalist at just 17 years and seven months old.
They won 6-3 7-5 after just an hour and ten minutes at the Super Domo as their fairy tale story continues on home soil.
Watch the match highlights in the video below!