These cameras work nicely for use in match. They have to be powered by the bot (use the Voltage Regulator Module) and are connected via Ethernet to your robot's radio/bridge. Don't worry about a high quality, you'll have to turn it down to 320x200 or something in that range during a real match anyways.
http://www.axis.com/us/en/products/axis-m10-series
For just recording during the match and NOT using the camera for vision during the match or as part your code, then a GoPro works very nicely.