ProTV, the associate producer of the 2018 ITF Davis Cup by BNP Paribas, is charged with producing a superfeed of all matches. The superfeed is created due to the different time zones, thus events take place at different times. The superfeed is a combination of live games and the high lights of those that have finished. This allows tele-spectators, information on all games, at their own time throughout the day.
The tennis multiplex above shows 4 windows of matches; Autralia, Japan and Kazakhstan which were finished and a fourth match being played. The fifth window, is a match (Serbia vs USA), due to start.