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Dominic Thiem Austria action against Gianluca Mager Editorial Stock Photo - Stock Image | Shutterstock
ATP Tour on Twitter: "⚠️ If Dominic Thiem reaches the @RioOpenOficial semi-final, he will be guaranteed to replace Federer at No. 3 in the FedEx ATP Rankings on Monday. https://t.co/sIHIxFOrDD" / Twitter
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