Madison Keys, who is ranked No. 8, has severed ties with her coach Thomas Hogstedt.
Madison Keys of the US reacts against Slovakia's Dominika Cibulkova in their women's singles match during the WTA Finals tennis tournament on October 25, 2016 in Singapore / AFP / ROSLAN RAHMAN (Photo credit should read ROSLAN RAHMAN/AFP/Getty Images)
Keys has stopped working with Hogstedt, who started coaching her in April, 2016. Keys won her second title in Eastbourne under his tutelage. Hogstedt worked with Genie Bouchard before joining forces with Keys.
Keys has had three coaching changes this year. She is now looking for a new coach.