Former Leeds United stars Terry Yorath and Noel Whelan showed their support for a young girl from Wakefield at a charity football match.
Betsy Kay, who celebrated her first birthday yesterday, suffers from mitochondrial disorder, which has caused the youngster to have a thickened heart muscle and a high amount of acid in her blood.
Other symptoms include failure to thrive, muscle weakness and a rare heart condition called hypertrophic cardiomyopathy.
A charity football match to raise awareness and funding for research into the disease was held at Bruntcliffe Academy in Morley yesterday.
Money raised will go to the Mitochondrial Research Fund.
To donate, visit www.justgiving.com/betsysfund.