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The 145kg Question: Can JJ van der Mescht Fill the Springboks' Legendary Number 4 Jersey?

If you have been following the latest Springbok news this week, one massive inclusion in Rassie Erasmus's first virtual alignment camp for 2026 immediately jumps off the page. Among the seasoned World Cup winners sits a 26 year old, uncapped giant. JJ van der Mescht has officially cracked the nod, and the South African rugby public is buzzing.

Standing at two metres tall and tipping the scales at an astonishing 145kg, the Northampton Saints powerhouse is impossible to miss. But as any everyday rugby fan knows, being a physical behemoth is only half the battle when you are putting on the green and gold.

The Weight of the Number 4 Jersey

In South African rugby, the number four jersey is not just a position on the pitch. It is a terrifying legacy. When you look at the men who have worn it before him, you realise that it requires a very specific type of enforcer.

• Bakkies Botha: The ultimate enforcer who defined physical intimidation for an entire generation.

• Eben Etzebeth: A modern colossus who combines aggressive dominance with an unbelievable work rate.

These legends were not just big men; they were the absolute physical heartbeat of the Springbok pack. The spiky question we need to ask is whether Van der Mescht can actually step out of the shadows of these giants. Does he have the ruthless aggression and unrelenting engine required to dominate at Test level, or is he simply a massive club player?

Size vs Culture: Will He Fit In?

Having watched his development closely from his early days at the Sharks, his stint at Stade Francais, and now his incredibly physical performances for Northampton in the English Premiership, I can tell you firsthand that he has the raw attributes. You do not score 50 metre breakaway tries weighing over 140kg without possessing freakish, natural athleticism.

However, Rassie Erasmus recently raised a very valid point. The Springbok coach openly questioned whether there would be enough time to get him properly integrated into the Springbok culture. Having the size is one thing, but does he fit the culture?

South African Test rugby demands absolute selflessness. It requires an unbelievable work rate off the ball and a willingness to go to the darkest physical places for the team. You cannot just be a big carrier; you have to hit every single ruck with malicious intent.

Will He Add to the Springboks?

The answer is a cautious yes, but the ball is entirely in his court. He brings a unique ball carrying presence and a sheer mass that is incredibly rare, even by South African standards. If the Springbok coaching staff can refine his raw power and instil that unforgiving, defensive mindset, they might just have found their next long term enforcer.

JJ van der Mescht is undoubtedly a huge man and a huge player. Now, he faces the ultimate test: proving he is tough enough to be a Springbok.