Pat Rafter admits it will be a shame if Bernard Tomic walks out on Australia's Davis Cup team, but says the 22-year-old is old enough to make his own decisions.

Responding to Tomic's decision to skip Australia's quarter-final against Kazakhstan next month over a dispute between Tennis Australia and Bernard's father John, Rafter revealed he stepped down from the captaincy this year partly because some of his young guns were doing his head in.

Pat Rafter says the situation with the Tomics has been brewing for years. Credit:Getty Images

The former world No.1 and Australian of the Year hopes new captain Wally Masur will resolve the issue with Team Tomic, but says he is staying out of negotiations, especially now so the country's top-ranked player can focus on Wimbledon starting on Monday.

Rafter, though, has been dragged into the ugly feud due to his new role as TA's player performance director, with John Tomic furious that his daughter Sara, who won her first professional tournament last weekend in Egypt, receives no financial support from the governing body.