Rugby World Cup 2019: South Africa show power but little finesse in big win over Namibia

Despite 57-3 'African Derby' win, it was a far from polished performance in their Pool B clash at the City of Toyota Stadium on Saturday

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  Tendai Mtawarira of South Africa is tackled during the Rugby World Cup 2019 Group B game between South Africa and Namibia at City of Toyota Stadium in Toyota, Aichi, Japan. Getty Images

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  South Africa's prop Vincent Koch (R) is tackled by Namibia's lock Johan Retief (down) during the Japan 2019 Rugby World Cup Pool B match between South Africa and Namibia at the City of Toyota Stadium in Toyota City. AFP

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  South Africa's flanker Francois Louw (R) scuffles with Namibia's players during the Japan 2019 Rugby World Cup Pool B match between South Africa and Namibia at the City of Toyota Stadium in Toyota City. AFP

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  Makazole Mapimpi of South Africa breaks away to go on and score his team's seventh try during the Rugby World Cup 2019 Group B game between South Africa and Namibia at City of Toyota Stadium in Toyota, Aichi, Japan. Getty Images

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  South Africa's Eben Etzebeth and Namibia's Tjiuee Uanivi contest a lineout during the 2019 Rugby World Cup match at the City of Toyota Stadium, Toyota City, Japan. PA Photo.

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  South Africa's Frans Steyn is tackled by Namibia's Muharua Katjijeko, right, and Johan Deysel during the Rugby World Cup Pool B game at the City of Toyota Stadium between South Africa and Namibia in Toyota City, Japan. AP Photo

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  South Africa's Siya Kolisi is tackled by Namibia's Wian Conradie during the Rugby World Cup Pool B game at the City of Toyota Stadium between South Africa and Namibia in Toyota City, Japan. AP Photo

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  Nicolas Sanchez (R) of Argentina in action against Leva Fifita (L) of Tonga during the Rugby World Cup match between Argentina and Tonga at Hanzono Stadium in Higashiosaka, Japan. EPA

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  Tonga's Siale Piutau in action, Argentina v Tonga - Hanazono Rugby Stadium, Osaka, Japan. REUTERS

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  Emiliano Boffelli (top) of Argentina and Latiume Fosita of Tonga jump as they struggle to catch the ball during the Rugby World Cup match between Argentina and Tonga at Hanzono Stadium in Higashiosaka, Japan. EPA

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  Matias Alemanno of Argentina (C) in action against Tonga players during the Rugby World Cup match between Argentina and Tonga at Hanzono Stadium in Higashiosaka, Japan. EPA

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  Argentina's prop Mayco Vivas tries to control the ball during the Japan 2019 Rugby World Cup Pool C match between Argentina and Tonga at the Hanazono Rugby Stadium in Higashiosaka. AFP

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  Argentina's Agustín Creevy is tackled during the Rugby World Cup Pool C game at Hanazono Rugby Stadium, between Tonga and Argentina in Osaka, Japan. AP Photo

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  Guido Petti (top) of Argentina wins a line out ball during the Rugby World Cup match between Argentina and Tonga at Hanzono Stadium in Higashiosaka, Japan. EPA

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  Argentina fans cheer during the match, Argentina v Tonga - Hanazono Rugby Stadium, Osaka, Japan. REUTERS

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  Juan Figallo of Argentina walks with his kid after the Rugby World Cup 2019 Group C game between Argentina and Tonga at Hanazono Rugby Stadium in Higashiosaka, Osaka, Japan. Getty Images

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  Matias Alemanno of Argentina takes selfie photographs with fans after the Rugby World Cup 2019 Group C game between Argentina and Tonga at Hanazono Rugby Stadium in Higashiosaka, Osaka, Japan. Getty Images

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  Sibusiso Nkosi of South Africa competes in the air for the ball against Lesley Klim of Namibia during the Rugby World Cup 2019 Group B game between South Africa and Namibia at City of Toyota Stadium in Toyota, Aichi, Japan. Getty Images

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  Makazole Mapimpi of South Africa evades a tackle from Chad Plato of Namibia to go on and score his team's seventh try during the Rugby World Cup 2019 Group B game between South Africa and Namibia at City of Toyota Stadium in Toyota, Aichi, Japan. Getty Images

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  South Africa fan holds a flag depicting South African rugby players - South Africa v Namibia - City of Toyota Stadium, Toyota, Japan. REUTERS

South Africa's electric wing Makazole Mapimpi scored two tries as they eased to a nine-try 57-3 win over neighbours Namibia, but it was a far from polished performance in their Rugby World Cup Pool B clash at the City of Toyota Stadium on Saturday.

Billed the "African Derby", there was only ever going to be one winner despite what Springbok coach Rassie Erasmus termed his "fringe" selection, and minnows Namibia simply could not cope with the physicality of the South Africans.

Hooker Bongi Mbonambi (two), loose-forwards Francois Louw, Schalk Brits and Siya Kolisi, full-back Warrick Gelant and centre Lukhanyo Am also crossed for tries, but there was a lack of cohesion and, at times, quality to the Boks' play that will be a worry for Erasmus.

They are next in action on Friday against Italy in a crucial match in Fukuroi City that should decide second place in the pool, while Namibia face the even more daunting prospect of meeting New Zealand in Tokyo on October 6.