Tomasin made his Men’s Eagles Sevens debut at Gold Coast Sevens in 2013, where he scored his first try in a Shield Semifinal win against Spain. He was a member of the AIG Men’s Collegiate All-Americans during their 2013 New Zealand Tour. On June 25, 2016, Tomasin made his full international test debut for the Eagles in a 25-0 shutout of Russia at Bonney Field in Sacramento, CA.
|18 Jun, 9:00 pm||Avaya Stadium||Italy||Men's Eagles||Summer Series||20 - 24|
|25 Jun, 10:00 pm||Bonney Field||Russia||Men's Eagles||Summer Series||25 - 0|
|04 Nov, 8:00 pm||Toyota Park||Maori All Blacks||Men's Eagles||Rugby Weekend||7 - 54|
|12 Nov, 11:00 am||Stadionul Arcul de Triumf||Romania||Men's Eagles||Autumn Internationals||10 - 23|