[Source: Reuters]The mighty Springbok pack turned on the power in the second half as South Africa beat Argentina 29-27 at Twickenham on Saturday to retain the Rugby Championship for the first time, ahead of New Zealand on points difference. The All Blacks’ 28-14 bonus-point win over Australia in Perth earlier meant South Africa needed a bonus-point victory to win the title with clear water, though their overwhelming points advantage meant that any win would be enough. They and New Zealand finished on 19 points, but South Africa’s points difference was plus-57 to the All Blacks’ plus-eight. They took an early 7-0 lead via a brilliant finish by winger Bautista Delguy and though South Africa had much possession and a dominant scrum, they made a series of handling errors. Argentina prop Mayco Vivas was yellow-carded for a high hit after 43 minutes and the South African pack took immediate advantage to bundle Marx over.