The Czech government reopened sports grounds to ease its COVID-19 measures.
It's an innovative tournament that will be a virtual replica of the tennis competition.
In January, Kyrgios led a bushfire relief campaign which raised millions of dollars.
Professional players will compete on the Tennis World Tour videogame to raise money for those struggling in the sport and people affected by coronavirus.
The Spaniard and his sister, Maria Bel, shared their backyard tennis skills in a social media post on Saturday and proved that just about anything can work as a net.
Each ration bag consists of flour, rice, oil, grains, tea, milk and soap, and can feed a family of five.
The double body blow resulted in the entire claycourt and grasscourt seasons being abandoned.
Yet, the tennis world agreed it was the right move at a time when the health services are under unbearable strain.
The cancellation of the only grasscourt major at the All England Club leaves the season in disarray, with no tennis due to be played until mid-July.
The USTA is following the advice of health experts in making its next moves.
The cancellation of the only grasscourt Grand Slam tournament at the All England Club would leave the tennis season in disarray.
McEnroe thanked well wishers later, tweeting, "So So touched by ALL the messages of support."
But with tournament timing crucial due to grass condition and weather, Isner has already started to ponder a year without Wimbledon.
Emergency meetings to settle the Wimbledon issue were taking place among All England Club chiefs on Tuesday.
Osaka, the 2018 US Open and 2019 Australian Open champion, asked the Japanese people to stay strong.