Ken Rosewall says he is worried that one more injury may bring the career of Lleyton Hewitt to an end, with some concerns over his participation at the Australian Open.
The 30-year-old has been Australia's top player for a decade, but has seen his status gradually slip in recent years.
Hewitt, a former world number one, has been hampered by injuries in recent times and that has led to him dropping outside the world's top 175 players. Anyone placing a tennis bet on Australian Open
matches should bear this in mind.
A troublesome foot injury forced the two-time Grand Slam champion to play just 20 competitive matches in 2011.
Hewitt recorded just one win over a top-40 player this year, with a straight sets win over Yen-Hsun Lu in Memphis back in March.
The 2002 Wimbledon champion has also struggled with hip, knee, ankle and wrist problems in recent years and as he prepares to turn 31 in February, some are questioning if he can turn around his fortunes. Anyone with a Betfair Tennis betting bonus
will be wondering if his career is coming to an end.
Eight-time Slam winner Rosewall stated: "If he does get too many other serious niggling injuries, I'd imagine he'd have to give it a miss.
"He has been unlucky that he has come up with these injuries, but maybe that's because of certain elements. The way he's played so much on hard courts."
Hewitt will hope he can prove the doubters wrong at Melbourne Park in January, but he will need to improve massively on recent performances in his home Slam.
The 2001 US Open champion, who has not won an ATP event since July 2010, has lost in the first round in two of the last three years.