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NEW YORK - SEPTEMBER 5, 2017: Chair Umpire Mariana Alves During 2017 US Open Match At Billie Jean King National Tennis Center Stock Photo, Picture And Royalty Free Image. Image 93828247.
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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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Wimbledon 2017: Daniil Medvedev loses the plot by tossing coins at umpire's chair | Sports News,The Indian Express
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Ana Ivanovic of Serbia argues a call with chair umpire Mariana Alves (top) of Portugal during her women's singles quarter-final match against Eugenie Bouchard of Canada at the Australian Open 2014 tennis
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Serena Williams controversy not an example of discrimination in tennis | Opinions | collegiatetimes.com
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