What health and safety factors do i need to consider when shooting sports photography?

Using a fisheye lens, 50 mm lens and a 300 mm lens
Any help would be much appreciated

I knew this guy once, Johnny I forget his name, he wore a flack jacket, two helmets, and iron underwear...
No but seriously, be aware of your surroundings, put insurance on your gear, and if your using the fisheye, make sure the skateboarder/snowboarder who's flying over you has his/her pilots license.

Be careful!!!

insure your gear, get sickness and accident insurance, get public liabillity insurance, if you can have an assistant watch you and your back

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Always be aware of your surroundings. If shooting a football game, know which direction you can safely go to escape players coming at you. Oh, and the insurance for your equipment is a must. I'd rather have broken equipment than me.