AUSTRALIA'S KYRGIOS CONCEDES TENNIS CAREER COULD BE OVER
Photo Credit: DAVID GRAY
The talented but temperamental 28-year-old had knee surgery a year ago, then aborted plans to return at Wimbledon after tearing a ligament in his wrist.
He withdrew ahead of the Australian Open as he continues to struggle for fitness, but is at the Grand Slam in Melbourne as a commentator.