 Nyorai kuenderera mberi kwechikamu chino - Mukushayikwa kwaSteve Smith, David Warner naCameron Bancroft kubva kuchikwata cheAustralia Test zvichitevera 2018 bhora-rekugadzirisa nyonganiso, Harris akawana mukana wake wokutanga wekutamba Test cricket kuAustralia. Mumutambo weSheffield Shield wakanangana neNew South Wales muna Gumiguru 2018, Harris akabatsira Victoria kupora kubva pakutanga kwakashata kwe26 aine asina kurohwa 250, zvibodzwa zvakanakisa zvebasa rake rekutanga-kirasi. Iyi innings yakamuisa munhaurirano yeimwe yenzvimbo dzisina vanhu pamusoro peAustralia yekurova. Mumitambo mina yekutanga yemwaka weSheffield Shield, akarova mamwe mazana maviri emakore uye akaenzana 87.40. Mushure memitambo makumi maviri neshanu yekutanga-kirasi yeVictoria, Harris akanga arova mazana mashanu uye avhareji 47.58, uye semhedzisiro yekugadzikana kwake kwakagadziriswa akasarudzwa muAustralia Test squad kekutanga. 