The tennis world tour is all assets which make up the female and male pro circuits, including:
*all male and female players
*all tournaments
*a male ranking and a female ranking which come from a 1 year/season simulation

The tennis world tour datas are saved on your device. Clearing your data, uninstalling the app or experiencing an saving issue can regenerated a new tennis world with some incoherence during the next 26 weeks/tournaments.
Play a full season to get it all straightened out!