She then took a bathroom break in the final set and delivered two bizarre , underhanded serves on match point .
Hingis was only three points from victory over Steffi Graf , but she argued repeatedly with the referee over line calls , even crossing the net .
Hingis then took a bathroom break in the final set and delivered two bizarre , underhanded serves on match point .
Hingis was only three points from victory over Steffi Graf , but she argued repeatedly with the referee over line calls , even crossing the net .