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Tatjana Schoenmaker, who won the gold medal in the 100m and 200m breaststroke at the 2018 Commonwealth Games‚ also set a new African record in the process.
The 23-year-old finished in a time of 30.42 in the heats to emerge as the fastest qualifier for Wednesday evening’s final.
Lara van Niekerk was second fastest in 31.35.
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Meanwhile‚ SA’s most decorated Olympian Chad le Clos made the 50m butterfly final‚ cruising through his heat in 24.14.
Pieter Coetze recorded the second quickest time of 24.29.
The championships, which have been moved from Kings Park pool in Durban, will conclude on Monday.
The Kings Park venue has experienced several problems in recent years, including a leaking roof, broken heaters and faulty lighting.
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