The ATP Tour has postponed all play for six weeks because of "escalating health and safety issues" arising from the coronavirus outbreak.
All tournaments on the men's ATP Tour and ATP Challenger Tour have been cancelled until 27 April.
The Miami Open was cancelled earlier on Thursday, following the postponement of Indian Wells and the Fed Cup Finals.
"This is not a decision that was taken lightly," said ATP chairman Andrea Gaudenzi.
"It represents a great loss for our tournaments, players, and fans worldwide.
"However, we believe this is the responsible action needed at this time in order to protect the health and safety of our players, staff, the wider tennis community and general public health in the face of this global pandemic.