I have this pain/stiffness in my left knee. It's not particularly painful, it's very a slight pain. But it really feels like there's pressure there, like a knuckle that needs to be cracked. It's on the inside of the leg, not in the knee cap or anything. I've felt it the last couple games, and I just this morning started to wear my tensor on it just trying to give it a little more support.
I have no idea what it could be, and I'm not too concerned. I just don't want it to get worse, or be a sign of something worse to come.