. >> reporter: partnering is tomny john who is known for elbow treatment. >> yearlong football, yearlong basketball, yearlong soccer, i'm against it all. >> i think it helps with the strengths and weaknesses as a child. >> stretch after the game, drink lots of water and stay active. >> reporter: kaiser is working on a smart phone and tablet app to help those young athletes. doctors say as they learn what works with this sports injury prevention they plan to share it. health and science editor, john fowler ktvu news. >>> we've all been talking about what a nice day it was today for the endeavour fly over. you know this entire weekend is going to be like today. we're going to have a really nice weekend coming up. there's a few high clouds. that's not fog. you can tell that because you see how it's not stock up at the fog and it has a pattern of a high cloud. that's no fog at the coast. that's no visible highlight and we have some high clouds overhead. things heated up today. they warmed up five to 10 degrees. the air started to sink a little bit. that's how we did away with a lot of the fo