Returning for a second run with the Junior Wallabies, after already representing his nation at last year's U20s Championships, Tupou will be a sure start in the 2018 squad. Currently contracted to the Melbourne Rebels, as well as representing the Melbourne Rising in the National Rugby Championship. Tupou's growing experience should hopefully result in a strong leadership out in the backline.
Semisi Tupou was a member of the Melbourne Rebels U20s team in 2017. Tupou earned Australian U20s selection in 2017 for the Oceania U20s Championship and World Rugby U20s Championship. The Nudgee College production is contracted with the Melbourne Rebels.