Sebastian Kienle On Kona Defense: “I Have To Prove Everything”

Calling Jan Frodeno's Frankfurt win a "wake up call," Kienle says he knows he has to prove that he is strong across swim, bike and run.

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Germany’s Sebastian Kienle knows that getting back-to-back Ironman World Championship titles will be no easy task. Calling fellow German Jan Frodeno’s Ironman European Championship a “wake up call,” Kienle says he knows he has to prove that he is strong across swim, bike and run.

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