Australian NBA star Andrew Bogut has officially withdrawn from the Boomers' London Olympic campaign.
The 27-year-old centre announced early this morning that he would have minor "clean out" ankle surgery in the coming weeks and would not be fully fit in time for London 2012.
He was already considered an outside chance to play after an ankle injury ended his NBA season in December but Boomers coach Brett Brown and Basketball Australia officials had held on to hope the big man could still be fit for London.
Bogut made his announcement on Twitter following stories in the US media about his off-season surgery.
"I am very disappointed to announce my withdrawal from the 2012 Olympic Games," he tweeted.
"After seeing a specialist I have decided it would be best to get my ankle cleaned out via arthroscopic surgery.
"There is simply not enough time to rehab and be fully fit for the games."
Bogut was traded earlier in the season to the California-based Golden State Warriors. His club told US media Bogut had loose particles and some bone floating around his left ankle with the surgery described as preventative.
The Warriors believe Bogut could be fit to resume "basketball activities" within six weeks but the centre pulled the pin on the Olympics because he believes he would not be 100 per cent fit to join in the Boomers' preparations.
The Warriors also announced Bogut's teammate and Team USA squad member Stephen Curry would also have surgery which, in all likelihood, ends his Olympic dreams.
Bogut becomes the second major Australian basketball player to withdraw from London due to injury with Opals star Penny Taylor forced out earlier with a knee injury.
The one positive for the Boomers is that centre is their deepest position with former NBA centre David Andersen and European-based players Aleks Maric, Aron Baynes and AJ Ogilvy all still in the mix for London.
The Boomers' official preparations are expected to resume early next month.