My cat was fighting with an unidentified animal under my deck. 10 min later i picked her up and she scratched me. do i have to worry about rabies?

Cat scratch: You run a greater risk of developing cat scratch fever than rabies. Since he is your cat observe him over the next7-10 days and if gets sick have him tested.

Rabies: Hopefully your cat was vaccinated. If not, and you do not know what the animal they were fighting was, have the cat observed and checked by a veterinarian. Scratching is a very improbable means by which to transmit rabies, but since this is an almost invariably fatal illness, would take this very seriously.