Grace wins Volvo Golf Champions event in Johannesburg after a play-off . Grace holds off South African legends Ernie Els and Retief Goosen to claim title . Belgian Grace also won a month ago Johannesburg Open on European Tour . Retief Goosen made birdie on the first extra hole to take the trophy .
Branden Grace wins Volvo Golf Champions event in South Africa after a play-off . Grace holds off South African legends Ernie Els and Retief Goosen to claim title . South African Grace also won last week 's Johannesburg Open on European Tour . Grace made birdie on the first extra hole to take the trophy .