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Jaap Eden
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<p>Jacobus Johannes "Jaap" Eden (19 October 1873 – 2 February 1925) was a Dutch athlete. He is the only male athlete to win world championships in both <a href="/facts/Speed_skating/yC1SS0Tb">speed skating</a> and <a href="/facts/Bicycle_racing/qXWXrkzx">bicycle racing</a>. </p>