Rio 2016: Chad Le Clos beats Michael Phelps for 'unbelievable' gold in 2012
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BBC Sport continues the countdown to the 2016 Rio Olympic Games with the moment Chad le Clos' father Bert is overcome with pride after watching his son beat Michael Phelps to gold in the 200m butterfly at London 2012.
Watch full coverage of the 2016 Olympic Games across the BBC this summer.