The 20-year-old, accused of not trying during a match at Wimbledon this year and handed a 28-day suspended ban by the ATP after making lewd suggestions about the girlfriend of opponent Stanislas Wawrinka during a match in Montreal last month, is his country’s second-ranked player at number 37 in the world.
Bernard Tomic, who also has a chequered disciplinary record and volatile relationship with Tennis Australia, veteran Lleyton Hewitt, Sam Groth and teenager Thanasi Kokkinakis will make up Wally Masur’s team in their first semi-final since 2006.
“After some good healthy discussion with Nick and his team we have agreed on a plan to help him develop all aspects of his game and ensure a long and successful future in the sport,” Masur said in a statement.
“Next week’s tie has come a bit too soon for him and he is not in that plan.”
Kyrgios burst on to the scene last year at Wimbledon when he knocked out Rafa Nadal with a breathtakingly brash display of power tennis and is regarded as a future grand slam champion.
However, his combustible temperament has attracted criticism with many disliking his on-court antics which often turn the air blue and reached a peak in Montreal when microphones picked up his foul-mouthed remarks aimed at French Open champion Wawrinka.
At Wimbledon this year he appeared to “tank” a game, declining to return Frenchman Richard Gasquet’s serve during a fourth-round defeat.
He then accused former Australian Olympic swimmer Dawn Fraser of being a “blatant racist” after she criticised his attitude.
After the Wawrinka incident Masur said Kyrgios was still in his plans for the Davis Cup, but he clearly feels the highly-charged atmosphere of a semi-final is not the right environment for the hot-headed player.
Masur has, however, offered Tomic the chance to heal his rift after the 22-year-old’s war of words with Tennis Australia and a run-in with the police in Miami.
Australia’s number one, dropped for the quarter-final win over Kazakhstan, has been warned though.
“So far he has demonstrated a will to change and backed that up with his actions. But it is a long road and he is now very acutely aware of the consequences of any future transgressions,” Masur said.
“There is very little room for error in the future.”
(Reporting by Martyn Herman, editing by Ed Osmond)