Siya Kolisi expressed his pride after captaining South Africa to successive Rugby Championship titles for the first time in their history.

Following New Zealand's win over Australia earlier on Saturday, the Springboks required victory over Argentina in their final match of the tournament at Twickenham to retain the trophy.

Things did not look promising when Rassie Erasmus' side trailed 13-3 during the first half, with Bautista Delguy's try helping the Pumas take control early on.

However, a pair of tries from Cobus Reinach and Malcolm Marx helped turn the contest around, with South Africa holding on for a 29-27 win despite Rodrigo Isgro's last-gasp try.

"It was a tough day today," Kolisi said. "All credit to the Argentinian team. They came hard, and we knew they were going to from the beginning. But once again, for us as a team, I'm so proud of our boys.

"It's not the perfect game of rugby that we played, but it was the fight that we showed, each and every single time. 

"You know it doesn't always go the way we want it to go, but we are always able to find a second gear with the bench that we have. It's really been special.

"We play against quality teams, it's really been a tough Rugby Championship. You can see how close it was, what happened this morning as well, and Argentina have been playing really well. They challenged us a lot today.

"Since 2018, the mindset that has been created among the team... you just don't feel in any moment that you're going to lose.

"It doesn't matter how it looks, and that is hard to get because I know how it feels on the other side when you know how difficult it is to get a win. I'm so proud of our country."

Back to back#Springboks #ForeverGreenForeverGold pic.twitter.com/amBv1y3QJP

— Springboks (@Springboks) October 4, 2025

South Africa are now the two-time reigning Rugby Championship and Rugby World Cup champions, but Reinach believes there is even more to come from the Springboks.

"It's unreal," he said. "We spoke about it the whole week. Going back-to-back, it shows a lot of character from the team. 

"We're still growing. There are still a lot of improvements to make, but we're slowly getting there. We're building, and we will keep on building."

Meanwhile, Argentina finished bottom of the table despite a vastly improved performance from last weekend's 67-30 defeat in Durban.

It was a momentous day for captain Julian Montoya, who surpassed Agustin Creevy for the most matches as Los Pumas' skipper, with 52.

"Last weekend, it was tough. We weren't proud about that," the hooker said. "But today, we saw our character, and we were better.

"We still need to improve a lot of things, but now I'm proud of the team and I love representing my country.

"You don't need to be an expert to realise the scrum was our biggest weakness today. But we keep going. We had a few opportunities but couldn't capitalise on them. I'm not happy about the result, but I'm proud of the response of the team."