If you get a chance, check out the website/podcast Big Lens Fast Shutter. They discuss issues like this and I have been listening since it started about a year ago.
Interestingly, there was a discussion about this recently. Most of the pros said they shoot jpeg for speed, except under difficult lighting conditions, like a poorly lit gym. So, there you go.
I heard it was very hot at that tournament and the dorms and dining halls had no air conditioning. Hopefully, your pics were worth it!