![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 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](https://c8.alamy.com/comp/2D3RYDR/chair-umpire-mariana-alves-works-the-2004-us-open-quarter-final-match-between-serena-williams-and-jennifer-capriati-in-new-york-september-7-2004-several-questionable-calls-were-made-during-the-match-as-capriati-went-on-to-defeat-williams-2-6-6-4-6-4-reutersjohn-sommers-ii-pjsv-2D3RYDR.jpg)
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
![ČičakoholicS 🌠 on Twitter: "Mariana Alves rounds out the parade. She was happy&smiling during this men's dubs match😍 Tennis is lucky to have her. http://t.co/11RGraqTlh" / Twitter ČičakoholicS 🌠 on Twitter: "Mariana Alves rounds out the parade. She was happy&smiling during this men's dubs match😍 Tennis is lucky to have her. http://t.co/11RGraqTlh" / Twitter](https://pbs.twimg.com/media/Bwdx9G_IEAAqYBr.jpg)
ČičakoholicS 🌠 on Twitter: "Mariana Alves rounds out the parade. She was happy&smiling during this men's dubs match😍 Tennis is lucky to have her. http://t.co/11RGraqTlh" / Twitter
![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 tournament in Melbourne January 21, 2014 ... 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 tournament in Melbourne January 21, 2014 ...](https://c8.alamy.com/zooms/9/5db6bdc44da74ae988fde133f7881caa/2e69xma.jpg)
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 tournament in Melbourne January 21, 2014 ...
![Serena Williams controversy not an example of discrimination in tennis | Opinions | collegiatetimes.com Serena Williams controversy not an example of discrimination in tennis | Opinions | collegiatetimes.com](https://bloximages.newyork1.vip.townnews.com/collegiatetimes.com/content/tncms/assets/v3/editorial/5/7e/57e95b0e-bc40-11e8-aa9b-b77e33e29535/5ba2a0d2e086e.image.jpg?resize=1200%2C799)