His best chance came at the 1938 FIS Nordic World Ski Championships in Lahti where he struggled to win over famous Ruud brothers: (Birger, Sigmund, and Asbjørn).
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Marusarz made the two best jumps in competition of 66 and 67 meters, earning him a total of 226.2 points, but the judges gave him much lower style scores than his rival (and friend) Asbjørn Ruud, the youngest of the three Ruud brothers - who jumped 63.5 and 64 m.
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