NICK KYRGIOS has withdrawn from the US Open in New York as fears grow about his tennis future.
The Australian, 28, has only played once on the ATP Tour since last October and not appeared at any of the four majors this year.
The world no 92 cited a wrist ligament injury for pulling out of Wimbledon the night before the Championships began.
And in January he failed to make the main draw of the Australian Open in Melbourne as he underwent a drainage procedure on his left knee.
There is no timescale on his return and though he is signed up for various money-spinning exhibitions, Kyrgios will have to use protected ranking status to play competitively at the top level.