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Angelique Kerber, a former world number one and three-time Grand Slam champion, was defeated by Tamira Paszek at the 2013 Linz Open in the second round. This victory marked a significant achievement for Paszek, as Kerber was one of the top-ranked players in the world at the time. Paszek's win over Kerber demonstrated her potential and ability to compete against top-level opponents.