While Paris caps crowd at 11,500, Rome will play without any fans.
Players are back on the clay in lead-up events to French Open.
World No. 1 will not defend her Roland Garros title for two main reasons.
"I'm going to have to make the best decision for my health," says three-time Roland Garros champion.
The Canadian praises the Aussie's mind-boggling speed.
Bookmakers and bettors weigh in on US Open favorite.
Masks are mandatory for all fans older than age 11.
