Leeds Rhinos club legend Rob Burrow has been diagnosed with motor neurone disease.
The 37-year-old, who won 13 major honours during his 15-year playing career with the Rhinos, is currently head coach of the reserve team at the Super League club.
"Regrettably, today I am confirming that I have been diagnosed with motor neurone disease," said Burrow in a statement released by the Rhinos.
"I would like to thank everyone for the support I have received already since being given my diagnosis.
"I know I have a big challenge in front of me but knowing that I have the love and support of so many people will give me inspiration and strength.
"I am very positive about the situation and intend to battle the condition as I still feel fit and well.
"I would like to ask for privacy at this time so I can adjust to the battle I have ahead and so that I can spend time with those closest to me ahead of Christmas and New Year."
Leeds have confirmed a planned testimonial for Jamie Jones-Buchanan against Bradford Bulls on January 12 will now be a joint fundraiser for both Burrow and Jones-Buchanan.