Mike,
Your gear list and mine are so similar, and your results compared to my first attempts are also very similar. The 85 1.8 is a good lens, but it's tough to nail the focus at such small apertures. When I moved to flash and the 70-200 f/4.0, my results improved greatly. I was using a 40D back then. The 200mm makes better bokeh, and the flash helps on freezing the action and controlling the WB.
My partner shoots with a 7D, and I've tried it a few times. It can easily handle higher ISO, even without Noise Reduction.
If you can't use flash, I'd suggest upping your ISO to better expose the image in that gym. Looks like you could get 6400 ISO and f/4 and stay around 400SS. (Your images are just a bit underexposed) At 12,800 ISO, you could raise your SS and apply a little NR. Noise Ninja is what I use. It's inexpensive and works well. The 7D can handle the highest ISO with a little help from NR.
Other than that, as long as your using AI Servo and Center Point Focus, setting a Custom WB would be my only other shooting suggestion, at first glance.
Your crops on 1,3,4 are too loose. (Too much room at the tops) #2 is nice and tight, but cutting off the arms and missing the ball is not good.
Not bad at all for a first effort though, especially under tough conditions. Please take the critique as helpful and not harsh.
Regards,
John
MKIII, 40D, XTI, 70-200 f/4L, 100-400L, 17-85 IS, 85 1.8, 100 2.8 Macro, 580 EX II, 550 EX, Bee's, PW's