Hi, I play football and I wrestle. Since my 8th grade year iv had knee issues. Always at the end of the seasons especially this one ( senior year football second round state playoffs) I begin to have a knot on the outside of my knee. I have a constant dull pain throughout the whole practice and the rest of the night. When im not running or being active on it, it causes no problems. The more the pain the bigger the knot gets. Even slightley pressing down on the knot causes discomfort. What could this be? I have talked to the 3 trainers at our school and none can really give me a straight forward answer.