Ramkumar Ramanathan beats Donskoy to make Eckental Challenger semis

ATP Cup: Kyrgios topples Tsitsipas; Russia, Britain enter quarterfinals

ATP Cup: Daniil Medvedev ends run of giant-killer Casper Ruud

Davis Cup Finals: Marin Cilic pulls out of Croatia squad due to injury

Russia's Youzhny to end ATP tennis career

Sharapova and Keys withdraw from Birmingham Classic

Maria Sharapova out of Birmingham with Wimbledon in mind

Maria Sharapova rediscovers winning form on Madrid clay