In 1996 , the end of year championships in Hanover ( World Tour finals ) had the surface changed from indoor carpet to indoor hardcourt .
While this was happening at Wimbledon , the ATP were also making significant changes to the tour .
In 1996 , the end of year championships in Hanover ( ATP   finals ) had the surface changed from indoor carpet to indoor hardcourt .
While this was happening at Wimbledon , the ATP were also making significant changes to the tour .