Indian Wells has been cancelled. (Getty Images)

The sports world is slowly reopening, but it may have to do so without fans, at least for the time being. As some leagues and cities begin to have events again, such as UTR, none of them are permitting fans from appearing on-site. 

The ATP and WTA Tours are shut down through July but World TeamTennis announced a one-site season in West Virginia that will be played in front of 500 fans. Talks are beginning on whether big tournaments like Grand Slams should be held in empty stadiums without fans.

While that may be the safest solutions, some players aren't happy with the idea, including Roger Federer and Petra Kvitova.