John Isner slams prize money cuts "while ATP executives keep full salaries, benefits and expense accounts."
Roger Federer, the 2019 Miami Open champion, is on the entry list for the tournament.
Back injury Rafael Nadal suffered in Australia, knocks him out of Rotterdam.
World No. 1 withdraws from Qatar Open.
Laver Cup Boston set for September 24-26th.
Spanish teenager will join 56-player field in Madrid Masters.
The LTA is hopeful fans will be permitted to return to grass-court events in June.
