Tennis Round-up: Zverev youngest to claim four titles in a year; Keys wins Stanford title

IMAGE: Germany's Alexander Zverev celebrates his win over South Africa's Kevin Anderson to win the Citi Open title at William HG FitzGerald Tennis Center in Washington, DC on Sunday. Photograph:......

Kerber matches Serena's title record this season with Stanford triumph

Runner-up Pliskova will move into the top-10 of the world rankings for the first time in her career Germany's Angelique Kerber celebrates after defeating Czech Republic's Karolina Pliskova in the......

Tennis: Sharapova withdraws from Rogers Cup; Pliskova breaks into top-10

Russia's Maria Sharapova plays a return. Photograph: Julian Finney/Getty Images Maria Sharapova's US Open preparations took a major blow with the Russian World No 2 forced to withdraw from next......