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Daniil Medvedev faces heavy fine after throwing coins at umpire's chair | Wimbledon 2017 | The Guardian
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Chair umpire Mariana Alves works the 2004 U.S. Open quarter final match between Serena Williams and Jennifer Capriati in New York, September 7, 2004. Several questionable calls were made during the match
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Serena Williams controversy not an example of discrimination in tennis | Opinions | collegiatetimes.com
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Umpire Mariana Alves Late Evening Light Editorial Stock Photo - Stock Image | Shutterstock Editorial
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