All Blacks star Sonny Bill Williams underwent surgery for a chest injury on Wednesday, which has ended his hopes of fighting South African heavyweight Francois Botha next month.
Williams, 27, who in August quit the world champion New Zealand team to take up a club contract in Japan, injured his pectoral muscle playing for the Panasonic Wild Knights on Saturday.
He underwent scans after arriving in Sydney on Tuesday to prepare for his November 24 bout, and told fans he went under the knife Wednesday.
"Just spoke to the doctor, operation went well," Williams told his 185,000 followers on Twitter.
"Thanks for the support I've been truly blessed."
Williams, the New Zealand heavyweight champion, had earlier told Fox Sports the Botha bout was a "little bit in doubt" due to his injury, but the fight has since been postponed to February.
The destructive centre, on a contract to play 12 matches for Panasonic worth a reported US__?__.2 million, crunched his shoulder attempting a tackle on former Western Force centre Gene Fairbanks during Saturday's match.
Gilbert has released a new line of rugby cleats. The Gilbert Virtuo 8S is part of the exciting new product. Check it out.
The entire All Blacks apparel line has been updated for 2013/14. Check out the New Zealand All Blacks polo.
The Nike Tiempo is a solid rugby cleat and one of few styles still made from full-grain natural leather.
The Gilbert Blitz 8S rugby cleat is a great cleat at a great price of $69.99. Get a new pair of cleats today.
A cool looking all black rugby cleat with the high performance adidas is known for. Get in the Gear!
Wear the crest of the British and Irish Lions on your t-shirt. A great look for the summer.
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The USA Rugby Pro Alternate rugby jersey is perfect for any fan of the Eagles. Get yours to wear during the summer Test matches.
The NEW All Blacks 2013/14 jersey has arrived at World Rugby Shop. Dare to wear the colors of the All Blacks.