Here are some pics with the 70-200 2.8 IS. Some are with an old flash unit my brother lent me and some are without, shooting at 2.8 and 160, with an ISO of 1600. I probably mixed up some of them in terms of flash or not. I also used the sports setting for the pics with the flash and manual for those without flash (first time taking pics on M).
No flash and I was probably 100 feet away from the action:
Here are some more without flash, some of them I was significantly closer to the action:
These were closer, no flash:
From the stands with flash:
From the stands, no flash: