The WTA Tour announced on Monday it was suspending the women's tennis season until May 2 because of the coronavirus pandemic.
"At this point in time, the WTA Tour is now suspended until May 2," a WTA spokesperson said.
"Due to the ongoing global coronavirus outbreak, the WTA tournaments in Stuttgart, Istanbul and Prague will not be held as scheduled.
"We will make a decision in the week ahead regarding the remaining WTA European clay court events and will continue to monitor this situation closely and its impact on the 2020 WTA Tour season."