Il Nuovo Postiglione - Reinach and Marx star as Springboks beat Argentina to retain Rugby Championship

The world champions' relentless forward power ultimately proved the difference as they overturned a 10-point deficit after Argentina led 13-3 early in the first half, with the Springboks retaining the southern hemisphere title on points difference from New Zealand.

The Pumas were still 13-10 up at half-time thanks to the first of two Bautista Delguy tries and two penalties from Santiago Carreras, with the Springboks' points coming via a Sacha Feinberg-Mngomezulu penalty and converted try from scrum-half Reinach.

But hooker Marx's try early in the second half saw the Springboks lead for the first time at 15-13 before Reinach's second of the match gave the Springboks breathing space.

And after Marx went over again, South Africa led 29-13 heading into the last quarter.

Delguy's second try, in the 66th minute, gave Argentina renewed hope and with three minutes left Carreras' penalty from the half-way line, which would have reduced South Africa's lead to six points, hit the right post.

Carreras' superb cross-kick allowed Argentina replacement Rodrigo Isgro to score a last-minute try, with Carreras' conversion the final act of a game whose finish was in marked contrast to the Springboks 67-30 thrashing of the Pumas in Durban last weekend.

South Africa knew a win would guarantee them the title after New Zealand's 28-14 victory over Australia in Perth earlier in Saturday's final round of the tournament.

They made just one change to the side, with fit-again prop Ox Nche restored to the starting side and Feinberg-Mngomezulu staying at No 10 after the 23-year-old scored a Springbok-record 37 points in that match.

- Slow South Africa start -

South Africa were a man down inside two minutes when Canan Moodie was yellow-carded for head-on-head contact with Argentina wing Juan Cruz Mallia.

Argentina made their advantage count with a fourth-minute try when a fine handling move ended with Carreras sending in Delguy at the corner, the recalled right wing showing good strength to beat the cover.

Carreras landed a fine conversion on a windy day and Argentina led 7-0.

But the Springbok pack shoved Argentina -- renowned for their set-piece strength -- back at a scrum, before Feinberg-Mngomezulu's penalty cut the Pumas' lead.

Carreras' close-range penalty nudged Argentina 10-3 ahead, with Moodie spared a second yellow card for a deliberate knock-on as he attempted to intercept.

Full-back Carreras' second penalty gave the Pumas a 10-point lead.

But centre Damian de Allende's burst took South Africa deep into Argentina's 22, the Springboks then declining kickable penalties in search of a try.

Argentina held out stoutly for several phases, but the try the Springboks had been threatening arrived two minutes before half-time when Reinach darted over for a score converted by Feinberg-Mngomezulu.

Argentina prop Mayco Vivas was yellow-carded early in the second half for a head-high challenge on Eben Etzebeth and from the ensuing penalty, hooker Marx peeled of a driving maul for a try in the corner.

Feinberg-Mngomezulu could not convert but at 15-13 the Springboks led for the first time in the match to the delight of their fans, who made up the bulk of a crowd of over 70,000 in what was technically a 'home' match for Argentina.

Another scrum penalty paved the way for the sniping Reinach to score his second try and, with Feinberg-Mngomezulu converting, the Springboks were two scores ahead at 22-13.

Argentina then stole South Africa's five-metre line-out but Marx was the first to react to the loose ball and he eventually forced his way over.

But Argentina were not done with Delguy grabbing his second try of the match in the 66th minute after intercepting a looping pass from Cheslin Kolbe to spark a tense finish.

G.Palmiero--INP