I'm in the same boat as you, after about 2 games I start feeling pain in my knee, it's downhill from there. I've had this off and on for about 2 years now, some nights better than others, and the soreness afterwards lasts about 3 days.
Braces just seem to move the pain around, instead of in under the cap it moves to on top of the knee or down the leg. My dad just had surgery on his knee to fix some cartilage problems, so I'm probably in for the same fate eventually. The only thing that seems to be working is strengthening the knee, and losing some weight. But even then the pain is there, it's just not as bad.