You've Been Served

By Barbara Kiviat

The puns are irresistible. Tennis hottie ANNA KOURNIKOVA is finally returning to the court, but she's matched against her parents. Alla and Sergei are suing their daughter, 22, over a waterfront house the three bought in Miami Beach for $5 million. Mom and Dad want to sell and net some cash, but Anna won't play along. She volleyed back last week with a countersuit to take her parents' names off the deed, since she had fronted the dough for the seven-bedroom spread. Apparently, nothing is out of bounds for this family.