SYDNEY - Tennis Australia will not guarantee Lleyton Hewitt the Davis Cup captaincy on his retirement next year and will instead open up the process to a group of applicants. The head body announced in January that the two-time Grand Slam champion would take over from Pat Rafter as Davis Cup captain with Wally Masur filling in as interim skipper. But two-time Cup winner Pat Cash and former teammate Paul McNamee are also interested in the job. They were both critical at the time of TA's announcement during this year's Australian Open to install Masur as interim captain in the period between Rafter's elevation to the performance director's role and the end of Hewitt's long playing career. TA president Steve Healy said he expected Masur to be considered as a longer-term captain.