sentences:  The South African Open was part of the Grand Prix from 1972 to 1989 and the ATP Tour from 1990 to 2011.In triathlon, Henri Schoeman is an Olympic bronze medallist, finishing third at the 2016 Summer Olympics in Rio.Conrad Stoltz is a three-time Xterra Triathlon world champion, Raynard Tissink is a multiple Ironman champion, Hendrick de Villiers is an ITU World Cup winner, Richard Murray is an ITU World Triathlon Series race winner and Dan Hugo is an Xterra and multi-sport star.