ATP Tour - Argentine Leonardo Mayer in action against fourth seed Tommy Haas at the Citi Open on Wednesday. Haas reached the quarter-finals for the fifth time in seven appearances, winning 6-4,
![Argentinian Tennis Player Leonardo Mayer Editorial Photography - Image of outdoors, handed: 55870187 Argentinian Tennis Player Leonardo Mayer Editorial Photography - Image of outdoors, handed: 55870187](https://thumbs.dreamstime.com/z/argentinian-tennis-player-leonardo-mayer-action-match-barcelona-tournament-conde-de-godo-april-55870187.jpg)
Argentinian Tennis Player Leonardo Mayer Editorial Photography - Image of outdoors, handed: 55870187
![Stockholm Open: Leonardo Mayer, Jeremy Chardy and Fernando Verdasco through | Tennis News | Sky Sports Stockholm Open: Leonardo Mayer, Jeremy Chardy and Fernando Verdasco through | Tennis News | Sky Sports](https://e0.365dm.com/13/07/768x432/Leonardo-Mayer_2979821.jpg?20150112101402)
Stockholm Open: Leonardo Mayer, Jeremy Chardy and Fernando Verdasco through | Tennis News | Sky Sports
![Leonardo Mayer, of Argentina, returns to Donald Young during the Miami Open tennis tournament, Thursday, March 22, 2018, in Key Biscayne, Fla. Mayer won 3-6, 6-4, 6-2. (AP Photo/Lynne Sladky Stock Photo - Alamy Leonardo Mayer, of Argentina, returns to Donald Young during the Miami Open tennis tournament, Thursday, March 22, 2018, in Key Biscayne, Fla. Mayer won 3-6, 6-4, 6-2. (AP Photo/Lynne Sladky Stock Photo - Alamy](https://c8.alamy.com/comp/2MNMC1H/leonardo-mayer-of-argentina-returns-to-donald-young-during-the-miami-open-tennis-tournament-thursday-march-22-2018-in-key-biscayne-fla-mayer-won-3-6-6-4-6-2-ap-photolynne-sladky-2MNMC1H.jpg)