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Madison Wilson -LRB- born 31 May 1994 -RRB- is an Australian competitive swimmer who has participated in backstroke and freestyle events in the FINA world championships .. freestyle. freestyle swimming. swimmer. swimming ( sport ). backstroke. backstroke. Wilson won two medals as a member of Australian relay teams at the 2014 FINA World Swimming Championships -LRB- 25 m -RRB- in Doha , Qatar  : a silver in the women 's 4 × 100-metre medley relay , and a bronze in the women 's 4 × 200-metre freestyle relay .. freestyle. freestyle swimming. At the 2015 World Aquatics Championships in Kazan , Russia , Wilson won three medals  : a gold as a member of the winning Australian team in the women 's 4 × 100-metre freestyle relay ; a silver in the women 's 100-metre backstroke ; and a bronze in the women 's 4 × 100-metre medley relay .. freestyle. freestyle swimming. backstroke. backstroke. 2015 World Aquatics Championships. 2015 World Aquatics Championships. At the 2016 Summer Olympics , Wilson represents Australia in the 100 m backstroke , where she finished 8th in the final .. 100 m backstroke. Swimming at the 2015 World Aquatics Championships – Women's 100 metre backstroke. backstroke. backstroke. 2016 Summer Olympics. Swimming at the 2016 Summer Olympics