No, the body I use is a consumer grade Rebel XTi. It has pretty poor high-ISO performance. I actually had to use a firmware hack to get it above ISO 1600. At games, I'm usually between ISO 2000 and 3200. Once you zoom in on the original size pics, you can see the noise. Plus, noise isn't as discernible in smaller sized pics.
I'm still learning, but what I've found is noise is a lot worse in darks and shadows, so the key is to set exposure on the high side, where your whites just begin to blow out. I just watch the histogram and expose accordingly. I shoot in RAW, so I do use a little noise reduction, and I also recover the blown out highlights as best I can in post processing. You can also use standalone noise reduction products like NoiseNinja. They generally do a good job, but too much will soften your photos.