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'Couldn't be more happy' – Springboks fan Roger Federer congratulates captain Siya Kolisi

The Springboks' Rugby World Cup success has been welcomed by a superstar supporter of a different sport,

Tennis icon Roger Federer, a vocal supporter of the Springboks, took to Twitter to post a video of his congratulations to captain Siya Kolisi following South Africa's 32-12 victory over England in Yokohama on Saturday.

"Siya, it's Roger here. Couldn't be more happy for you and the team," Federer said.

"What a victory, what an amazing team effort.

"You guys spent so much time together and you ended up with a big win.

"Many congratulations and I hope I can meet you soon. You're the best.

The Springboks responded, retweeting the video and thanking Federer for his support.