 Nyorai kuenderera mberi kwechikamu chino - Mostert akatanga kutamba neSpringboks musi wa13 Nyamavhuvhu 1921, vachipesana neNew Zealand muDunedin. Akatamba semutambi akasimba mumutambo wekutanga newechipiri uye akabva aenda kuhooker kumutambo wechitatu. Muedzo wechipiri uyo Mostert akatamba nawo waiva muedzo wa1924 waipikisana nechikwata chakatenderera kubva kuBritish Isles. Panguva yomuedzo wechipiri munhevedzano, akawana muedzo wake wokutanga uye bedzi. 