The timing of professional tennis' return will reveal whether the tours and federations are more interested in making money or looking after the health of players, Australia's John Millman said.
The professional game has been suspended since March because of the COVID-19 pandemic and the International Tennis Federation, WTA and ATP have pushed back plans for a resumption of the season until August at the earliest.
Millman, a 16-year veteran of the ATP Tour and ranked 43rd in the world, says even that would probably be premature.