Cape Town - Springbok prop Trevor Nyakane is a major injury concern for the remainder of the national team's 2019 Rugby World Cup campaign in Japan.

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Nyakane, who has been in fine form for the Bulls and Springboks this season, was helped from the field shortly after coming on as a second half replacement in Saturday's 23-13 Pool B defeat to the All Blacks in Yokohama.

Post-Test coach Rassie Erasmus confirmed that the injury to Nyakane's calf 'looks fairly serious'.

Nyakane was also forced to leave the field in the Springboks' final World Cup warm-up match against hosts Japan with a leg injury.

Should Nyakane be forced out of the tournament, Thomas du Toit would appear the logical replacement to join fellow tightheads Frans Malherbe and Vincent Koch in the squad.

Scorers:

South Africa

Try: Pieter-Steph du Toit

Conversion: Handre Pollard

Penalty: Pollard

Drop goal: Pollard

New Zealand

Tries: George Bridge, Scott Barrett

Conversions: Richie Mo'unga (2)

Penalties: Mo'unga (2), Beauden Barrett

Teams:

South Africa

15 Willie le Roux, 14 Cheslin Kolbe, 13 Lukhanyo Am, 12 Damian de Allende, 11 Makazole Mapimpi, 10 Handre Pollard, 9 Faf de Klerk, 8 Duane Vermeulen, 7 Pieter-Steph du Toit, 6 Siya Kolisi (captain), 5 Franco Mostert, 4 Eben Etzebeth, 3 Frans Malherbe, 2 Malcolm Marx, 1 Steven Kitshoff 

Substitutes: 16 Bongi Mbonambi, 17 Tendai Mtawarira, 18 Trevor Nyakane, 19 RG Snyman, 20 Francois Louw, 21 Herschel Jantjies, 22 Frans Steyn, 23 Jesse Kriel

New Zealand

15 Beauden Barrett, 14 Sevu Reece, 13 Anton Lienert-Brown, 12 Ryan Crotty, 11 George Bridge, 10 Richie Mo’unga, 9 Aaron Smith, 8 Kieran Read (captain), 7 Sam Cane, 6 Ardie Savea, 5 Scott Barrett, 4 Sam Whitelock, 3 Nepo Laulala, 2 Dane Coles, 1 Joe Moody

Substitutes: 16 Codie Taylor, 17 Ofa Tuungafasi, 18 Angus Ta’avao, 19 Patrick Tuipulotu, 20 Shannon Frizell, 21 TJ Perenara, 22 Sonny Bill Williams, 23 Ben Smith