World No. 7 sees bleak scene for Flushing Meadows.
"We should just park it and start again at the beginning of next year," says former British Fed Cup captain.
Former world No. 1 says "the door is open" for potential comeback.
ITF Vice President Katrina Adams on lessons learned from tennis.
Up to 500 fans will be permitted for outdoor matches.
Four of world's Top 10 to play in Patrick Mouratoglou's exhibition league.
Watch former Wimbledon champions—and fans around the world—recreate traditions of The Championships.