Former Australia lock Dan Vickerman has died at the age of 37, according to the Australian Rugby Union (ARU).
The South African-born player, died in his family home in Sydney on Saturday night and is survived by his wife Sarah and two sons.
The details of his death have not yet been disclosed.
Vickerman played 63 Test games for Australia and featured in three World Cup tournaments, after making his international debut in 2002.
He lined out for Northampton Saints during the 2009-2010 season while studying at Cambridge University, where he played in two varsity games.
Former Australia lock Dan Vickerman has sadly died at the age of just 37.
63 Tests, three Rugby World Cups, RIP. https://t.co/uHxinFVQF3
— Rugby Lives (@RugbyLives) February 19, 2017
Vickerman was then forced to retire in 2012 due to persistent problems with stress fractures in his right leg, following Super Rugby spells with the Brumbies and Waratahs.
The former Wallabies player remained involved in the game through his work for the Rugby Union Players’ Association and worked in commercial real estate after retiring from rugby.
Speaking about Vickerman's contribution to rugby, ARU chief executive Bill Pulver said:
"Dan was an uncompromising competitor who forged a wonderful international rugby career despite a number of injury setbacks along the way."
"He was an enforcer on the field and a much-loved character off the field. He cared deeply about the game and the players, helping players transition into life after rugby in his role with RUPA following his retirement."
"Our thoughts and prayers are with Dan’s family at this extremely difficult time."
Tributes are being payed worldwide to Vickerman and his family.
Our thoughts & prayers are with the family & friends of Dan Vickerman & the rugby family in @qantaswallabies. Rest In Peace Dan. #rip
— Irish Rugby (@IrishRugby) February 19, 2017
Jerry, Jonah, Joost, Sione and now Dan Vickerman.
What a team they're forming up there. ðŸ‘ðŸ‘✊#RIPDanVickerman #Legend— Waisale Ratulevu (@WiseRatulevu) February 19, 2017
The #AllBlacks join the rugby family in mourning the passing of former Wallabies lock Dan Vickerman. Rest in Peace. pic.twitter.com/uBxw8zK7tm
— All Blacks (@AllBlacks) February 19, 2017
Dan Vickerman. Legend of both Australian & Cambridge University Rugby. Gone way too soon at 37...RIP
— Jamie Roberts (@Jamiehuwroberts) February 19, 2017
Incredibly saddened waking up to the news of Dan Vickerman. A true gentleman of the game. Thoughts are with his family.
Rest easy Vicks— Adam Ashley-Cooper (@AdamCoopy) February 19, 2017
Waking up to sad news about Dan Vickerman this morning. Always enjoyed playing against him. A real competitor and a great guy.
— Victor Matfield (@VictorMatfield) February 19, 2017
Shocked an old team mate Dan Vickerman has passed away..Grateful to have played along side you..Thoughts & prayers are with his wife & 2kids
— Quade Cooper (@QuadeCooper) February 19, 2017
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