This year's Diamond League athletics meeting in Doha, initially scheduled for Oct. 9, has been brought forward by a fortnight and will take place on Sept. 25, organisers announced on Monday.
The event in Doha, which serves as the traditional season opener, had previously been pushed back from its April 17 slot due to the coronavirus pandemic.
"Due to the ongoing global health situation and ever-changing coronavirus regulations, the 2020 Wanda Diamond League calendar remains provisional and subject to further changes," organisers said in a statement.
The competitive season is set to begin in Monaco on Aug. 14 followed by meetings in Stockholm, Lausanne, Brussels, Rome, Naples, Doha and a yet to be determined location in China.
Diamond League meetings in Eugene, London, Paris, Rabat, Gateshead and Shanghai have been cancelled.
Organisers of sports events have been forced to find new dates for all their competitions including the Olympic Games which were due to be held in Toyko but have been postponed until 2021.