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<p>What happens when a multi world record-breaker meets the rising star who's surpassing some of her records? We sit down with backstroke star Jo Corben and 'young pretender' Kirsty Johnson to discuss their rivalry and mutual admiration.</p><p>From their training regimes in and out of the pool to sharing backstroke drills, Jo and Kirsty discuss what it takes to reach the top.</p><p>They both also run successful swim schools and discuss the highs and lows of teaching future generations of young swimmers. </p><p>Helen Gorman asks the questions to find out how well these two backstroke aces really know each other.</p>