![Referee, Mariana Alves (R) of Portugal, helps Russia's Anastassia Rodionova who sprained her right ankle during her second round match against Japan's Ai Sugiyama at the Hansol Korea Open Tennis Championships in Referee, Mariana Alves (R) of Portugal, helps Russia's Anastassia Rodionova who sprained her right ankle during her second round match against Japan's Ai Sugiyama at the Hansol Korea Open Tennis Championships in](https://c8.alamy.com/comp/2E7P3NX/referee-mariana-alves-r-of-portugal-helps-russias-anastassia-rodionova-who-sprained-her-right-ankle-during-her-second-round-match-against-japans-ai-sugiyama-at-the-hansol-korea-open-tennis-championships-in-seoul-september-28-2006-reuterslee-jae-won-south-korea-2E7P3NX.jpg)
Referee, Mariana Alves (R) of Portugal, helps Russia's Anastassia Rodionova who sprained her right ankle during her second round match against Japan's Ai Sugiyama at the Hansol Korea Open Tennis Championships in
![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 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](https://c8.alamy.com/comp/2E69XMA/ana-ivanovic-of-serbia-argues-a-call-with-chair-umpire-mariana-alves-top-of-portugal-during-her-womens-singles-quarter-final-match-against-eugenie-bouchard-of-canada-at-the-australian-open-2014-tennis-tournament-in-melbourne-january-21-2014-reutersdavid-gray-australia-tags-sport-tennis-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
![I thought it was another Wimbledon conspiracy" - When Serena Williams called out chair umpire who made bizarre line calls I thought it was another Wimbledon conspiracy" - When Serena Williams called out chair umpire who made bizarre line calls](https://staticc.sportskeeda.com/editor/2022/12/38b21-16706852978781-1920.jpg)
I thought it was another Wimbledon conspiracy" - When Serena Williams called out chair umpire who made bizarre line calls
![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:large)
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
![Daniil Medvedev faces heavy fine after throwing coins at umpire's chair | Wimbledon 2017 | The Guardian Daniil Medvedev faces heavy fine after throwing coins at umpire's chair | Wimbledon 2017 | The Guardian](https://i.guim.co.uk/img/media/dfda9a42a7c2014482f39559ba945c79f687f8e9/0_182_4985_2991/master/4985.jpg?width=1200&height=900&quality=85&auto=format&fit=crop&s=8550f74d9060bc0adbf8caba19032447)
Daniil Medvedev faces heavy fine after throwing coins at umpire's chair | Wimbledon 2017 | The Guardian
![Wimbledon 2017: Daniil Medvedev loses the plot by tossing coins at umpire's chair | Sports News,The Indian Express Wimbledon 2017: Daniil Medvedev loses the plot by tossing coins at umpire's chair | Sports News,The Indian Express](https://images.indianexpress.com/2017/01/daniil-medvedev-m.jpg?w=389)
Wimbledon 2017: Daniil Medvedev loses the plot by tossing coins at umpire's chair | Sports News,The Indian Express
![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)