Just 13 seconds into the Steamboat Springs hockey home opener, senior Finn Baier had already scored the game winning goal.
Winger Duhan van der Merwe reclaimed his try-scoring record for Scotland as they ended the Wallabies' hopes of a Grand Slam.
Australia-born Tuipulotu scored the first of the Scots’ four tries before the break in a 27-13 victory at Murrayfield.