Springbok number eight Warren Whiteley has praised his opposite number Billy Vunipola before Saturday's showdown with England at Twickenham.
"He is a fantastic player and one numerous dangerous players in the England side," Whiteley told Netwerk24.
"We don't focus on individual players, but he is outstanding and has been playing well consistently throughout the year. He gets them on the front foot and has good contact skills. I rate him highly."
Vunipola was this week nominated by World Rugby as one of five candidates for its Player of the Year award.
Whiteley though said he was focussing on his own game rather than getting caught up with the opposition.
"I believe we have made good progress over the last few weeks and I'm optimistic about the next few weeks. I stay away from the negative talk and rather focus on the positive," he said.