[1] Siegelaar took part in the World Championships of 2003 in Milan winning the silver medal in the four.

With the Dutch eights she qualified for the 2004 Summer Olympics in Athens and she and her team mates rowed to the bronze medal.

Earlier that year they won the Rowing World Cup in Amsterdam and they finished third in both Luzern and Linz.

[1] She qualified for the 2008 Summer Olympics in Beijing with the Dutch eights forming a team with Femke Dekker, Annemiek de Haan, Roline Repelaer van Driel, Nienke Kingma, Annemarieke van Rumpt, Marlies Smulders, Helen Tanger and cox Ester Workel.

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