In short: Brendan Steele finished the tournament at 18-under-par after heading into the final round as overnight leader. Brendan Steele finished the tournament at 18-under-par after heading into the final round as overnight leader. American Brendan Steele has held off a fast-finishing Louis Oosthuizen for a one-shot win at LIV Golf's Adelaide tournament. Steele finished 18-under-par at the Grange Golf …