Where can we verify the starting time that you mentioned here? I was also trying to find out the exact start time of those matches. But I only managed to find out that some of those matches started before 10:00 AM EDT, while some other matches started after 10:00 AM EDT. Two to three matches were played on the same court number. Which proves all the matches didn't happen at the same time. Bookmakers were indeed showing a generic time. Maybe OP has already verified the game start times and accepted the decision of Roobet.