NBA superstar Devin Booker was just named a Special Olympics Global Ambassador, and the Phoenix Suns guard credits his little sister, Mya ... for inspiring much of the amazing work he's done.
"I've celebrated the accomplishments and witnessed the challenges my sister has experienced as a person with intellectual disabilities," Booker said Thursday.
"She motivates me every day, and I'm humbled to be part of Special Olympics, a global organization with a mission to help spread awareness about the abilities of people with intellectual disabilities."
Booker's 18-year-old sister was diagnosed with DiGeorge syndrome -- a rare genetic chromosomal disorder that can lead to mild intellectual disabilities.