Perhaps the most frightening thing about South Africa right now isn't that they beat the All Blacks 43–28 in Baltimore.

It's how they did it.

Six tries. Width. Offloads. Tempo. A scrum-half darting around the fringes. Kurt-Lee Arendse scorching away from defenders.

Hang on — aren't these supposed to be the big, bad Springboks who scrum you into submission and then unleash the Bomb Squad?

That's precisely the point.

After four Tests and a 3–1 series victory over New Zealand, Rassie Erasmus has demonstrated something potentially more valuable than another trophy: South Africa can change the question halfway through the exam.

Four Tests, different Boks

Remember Johannesburg.

New Zealand won the opener 33–16, scoring five tries to one. The All Blacks found space, moved South Africa around and reminded everybody that if you give their strike runners transition ball, you're playing with fire.

So the Boks changed the contest.

Cape Town became tighter. Soweto became nastier. Set piece, gain-line, maul, territory. Malcolm Marx's rolling-maul try in the third Test was almost a visual summary of the tactical adjustment.

Then came Baltimore.

And suddenly the handbrake came off.

South Africa led only 17–14 at half-time, but eventually scored six tries to four, through Damian de Allende, Morné van den Berg, Marx, Pieter-Steph du Toit, Arendse and Cameron Hanekom.

That's not merely power rugby.

That's range.

Van den Berg changed the picture

Morné van den Berg was named Player of the Match, and deservedly so.

His importance wasn't simply his try. It was the speed and uncertainty he created around the breakdown.

A dangerous scrum-half forces defenders to make decisions. Does the guard defender bite inward? Does the pillar hold? Can the openside drift early?

Get one of those decisions wrong and suddenly South Africa aren't simply carrying another enormous forward into you — they're attacking the space you've created by preparing for him.

That is precisely the evolution opponents should worry about.

And then there is Hanekom. Another young player emerging in a Springbok squad supposedly approaching its sell-by date. His late try finished the contest, but his broader significance is what he offers Erasmus: another explosive loose-forward option as the regeneration towards 2027 continues.

Don't write off these All Blacks

Now, let's not get silly.

A 3–1 scoreline does not mean New Zealand are miles behind.

Their 32-phase attack before Will Jordan's first-half try in Baltimore was outstanding Test rugby: patience, handling under pressure, repeated defensive manipulation and eventually the incision. Jordan remains exactly the sort of player who can punish a defensive line the moment its spacing fractures.

New Zealand also dragged themselves back after Marx and Du Toit scored early in the second half. Ethan Blackadder's try kept them alive before Arendse finally ripped the match away.

Even Erasmus acknowledged afterwards that he didn't feel the series was safe until roughly the final 10 minutes.

So the All Blacks remain dangerous.

But here's their problem.

Against South Africa, dangerous isn't enough.

The Bok squeeze — and then the punch

This is where the series was won.

New Zealand want continuity, quick recycle and defenders making decisions while retreating. South Africa increasingly denied them those pictures through collision dominance, set-piece pressure, aerial competition and brutal defence.

But Baltimore showed the other side.

Once New Zealand began committing bodies to South Africa's heavy traffic, the Boks had the ambition — and personnel — to attack elsewhere.

Arendse's decisive break was the perfect illustration. One opening, acceleration, gone.

The old proposition was: can you survive South Africa's power?

The new proposition might be: what happens if you survive it and they start playing?

That's considerably more uncomfortable.

2027 just got interesting

A crowd of 68,173 packed M&T Bank Stadium — reported as the largest attendance for a rugby international in the United States — and watched the world champions recover from losing Test one to win three straight against their greatest rivals.

And lurking beyond all this is Australia 2027.

If the World Cup pools follow their expected course, these two could meet as early as the quarter-finals.

So here's your early GameDayBuzz question:

Who beats these Springboks when it really matters?

New Zealand have shown they can.

The trouble is South Africa have just shown they can beat New Zealand in more than one way.

And in knockout rugby, tactical adaptability might be the most frightening weapon of all.