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Ostrava, Czech Republic. 06th May, 2018. Tennis player NINO SERDARUSIC of Croatia in action during the match against Belgian player De Greef at the Prosperita Open men's tennis challenger tournament in Ostrava,
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Ostrava, Czech Republic. 06th May, 2018. Belgian player De Greef won the singles competition at the Prosperita Open men's tennis challenger tournament in Ostrava (red clay, prize money 64,000 euros), Czech Republic,
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