Fonseca, youngest Brazilian to win an ATP tournament!

IMAGE: 18-year-old Joao Fonseca celebrates after winning the Argentina Open final against Argentina's Francisco Cerundolo in Buenos Aires, on Sunday. Photographs: Matias Baglietto/Reuters Joao......

End of an era: Wimbledon says goodbye to line judges

IMAGE:  A line judge is looks down a line as Belarus' Victoria Azarenka serves during the fourth round match against Ukraine's Elina Svitolina. Photograph: Hannah Mckay/Reuters Wimbledon will......

Teen Tien matches Sampras mark, celebrates with pizza

'Not too many pepperonis. More just cheese.' IMAGE: Learner Tien, 19, is the youngest American man to reach the third round of the Australian Open since an 18-year-old Pete Sampras in 1990.......

Unstoppable Sinner: Back-to-Back Aus Open Champion

IMAGE: Italy's Jannik Sinner reacts after winning the final against Germany's Alexander Zverev. Photograph: Edgar Su/Reuters Jannik Sinner successfully defended his Australian Open title on......

All about US Open champion Jannik Sinner

IMAGE: Jannik Sinner overpowered American Taylor Fritz in the final to become the first Italian man to win the US Open singles title. Photograph: Mike Frey-Imagn Images/Reuters Factbox on Italy's......