Springbok prop Ox Nche and fullback Aphelele Fassi are expecting a physical encounter against Australia in their Rugby Championship opener at Ellis Park.
Japan head coach Eddie Jones believes Springbok scrumhalf Grant Williams is the fastest No.9 in the game.
Springboks defence coach Jerry Flannery believes this year's Rugby Championship will be even more competitive than last year, which saw the South Africans walk away with the crown.
Springbok centre Jesse Kriel is raring to go against the Wallabies in the first round of the Rugby Championship at Ellis Park on Saturday.
Springbok head coach Rassie Erasmus has highlighted winger Edwill van der Merwe's importance in Saturday's Rugby Championship clash against the Wallabies.
The two South Africa U18 squads have rotated extensively for their second-round matches of the U18 International Series in Boland Landbou near Wellington.