Most of the ITF matches which is not on TV , are not even being played.Most probably the players are at the hotel room . But the scores keep moving , if you placed any bets on your sportsbook account , definetely get beaten. I had test it many times , even when a favourite player was 40-0 on his/her own serve .. odds 1.05-1.10 offered , when i took it for even $5 , the opponent crawls back to 40-40 and then serve got broken .. Thats only for $5 bet . Definetely i believe , there is nobody playing in the court , because the scores happens too fast .. its like 2 points scored within 10 seconds between each play. There is no way to have 2 scoring plays to happen within 10 secs in real for ITF , because the players need to collect the ball themselves after each play ..
Organizers must have sold all the matches in ITF to bookmakers or any groups who willing to pay the organizers money , since the organizer wont going to make money from the spectators , becoz ITF have only few people will buy tickets , so the best way is to sell this matches to bookmakers/groups . These bookmakers or groups then will decide which player to win every match depending on the bets they taken and thats will profit them ..