Transcript for 5-Year-Old Boy Signs Contract in Crayon With Utah Jazz
It's rare NBA stars sign a contract in crayon, but you're about to meet one, as we team with ABC 4 in Salt Lake City. Here's how our team started their report. The newest member of the Utah jazz, JP Gibson. Reporter: He's just 5. What he lacks in age, height and experience, he more than makes up for in heart. Right? Yeah. Reporter: And just look. His sister waving there. There goes her brother, crayon in hand, signing his contract. And there it was, his green Jersey. JP Gibson was diagnosed with lee keep Ya when E he was just 2 1/2. This image of him from the anything can be project, helping his dream of basketball come true. He's been fighting cancer longer than he has not been in his little life. Reporter: Now he's fighting for the Utah jazz. His feet dangling there above the court. There he goes, number 1. His hands on his hips. Big game. And look at this. Before the game, the stretch. And the rookie dance-off. Just listen to the fans. Chemo damages their joints. We didn't think he'd be able to run. To see him on the court, I don't think there are words to express, I mean -- we are so grateful. So -- Reporter: Grateful for that moment for their son. Oh, wait a second. We have a sub coming into the game. Reporter: Just listen to the announcer. JP Gibson has come into the game. Reporter: There goes number 1. And he's about to prove why he's America strong. They pass him the ball. Inbound to JP. Working through the big man. He slides by -- he rises to the rim and hammers! JP Gibson with the two-hand flush! Reporter: The two-hand flush and his big postgame interview today with all of us in the news room. He showed us his form, his move for that dunk and his Jersey. He's proud of that, too. Mom and dad, were they nervous? I knew he was going to go down and score. He's very confident in his skills. Reporter: We have a lot of fans here now for the Utah jazz since you started playing with the team. Can you see all those people? And the wave back from the biggest star in Salt Lake City tonight.
This transcript has been automatically generated and may not be 100% accurate.