For the past month or so I've been having pain in my left knee and heel while playing. It usually goes in this order: 1. After about twenty minutes of playing, my heel begins hurting. It hurts every time that I step down and push off with my foot. 2. After another twenty minutes of running awkwardly because of the heel pain, I get a sharp pain directly underneath my knee that hurts anytime I take a step. Its getting quite annoying and I'm really tired of it. I've tried different stretches and wrapping the foot but this only delays the pain. I was thinking of switching from my Adidas CC Ultimate Edge to the thicker, bulkier Barricade V's for maybe more comfort. But if anybody can recommend anything that would be great.