A try in the final minute by Junior Springbok No 8 Juarno Augustus and a successful conversion by flyhalf Curwin Bosch saw the teams finish the clash tied at 23-23.
“It was nerve-wrecking, but I had confidence that we could score in the end,” said Roux.
“I knew that if we get ball possession late in the second half we would convert it into points, just as we did in the first half, because we had very little possession in the second half.
“The players showed tremendous character and that is fantastic in a World Championship.”