Karen managed professional tennis players for ProServ between 1980 and 1988. Management included sale and management of commercial endorsements, placement in Australian tournaments and events, management of investment income earned in Australia, travel arrangements, media management, etc.
The following is a list of then active professional tennis players competing on the worldwide tours represented by Karen Scott Happer as Managing Director of ProServ Australia in the 1980s:
IVAN LENDL
PAM SHRIVER
JIMMY CONNORS
TRACY AUSTIN
ELIZABETH SMILEY
WALLY MASUR
TONY ROCHE
YANNICK NOAH
JIMMY CONNORS