[Elaine "Lady Blue"]

A Schedule C is in order for your Federal Taxes. I filed one every year for my 17 years as an ASA umpire. My association is fortunate enough to have a CPA as one of it's members and he held meetings to instruct us what to put down. Here's a list, and pardon me if I leave anything out:

ASA, NFHS, or whatever dues, plus any local association dues
Uniform costs--shirts, pants, socks, underwear, hats, jackets, sweaters, shoes, etc.
Dry cleaner and laundry costs for uniforms.
Gas, oil, mileage, maintenance costs involved for your vehicle that you use to travel to games. Mileage is from home if it's a weekend, or from your main job to the games during the week. (I hope you kept a mileage log)
Food that you eat and PAY FOR at games, tournaments.
Equiptment costs

But, since you've never done a Schedule C before, go to a CPA or H&R Block for assistance, or the Feds may question your return.

Good Luck,
Elaine