J.B.
I had to get mold stains out of a black/white/orange hockey jersey. I wish I could narrow down what of the many things I did actually worked, but I don't know if it was the last step or a combination of the steps. At the end of the day, I was able to salvage the jersey. Here is what I tried:
Soaking in OxyClean
Fels-naptha soap rubbed onto the spots
Soaking in vinegar
Rubbing with a vinegar/baking soda paste
Soaking in borax
Rubbing with a borax paste
Rubbing in Clorox 2 stain remover
Soaking in Clorox 2
Dotting directly with bleach - I started on the white areas and then was like "screw it, let's see how it does on the other colors" and the other colors didn't get bleached out, which surprised me but might be due to the athletic fabric. I used a q-tip to dab and then rinsed quickly. This seemed to be the step that was most effective. When I gave it a final wash with detergent and Oxy Clean, it looked good.