I got hit in the outer left wrist with a 90 mph fastball no fracture it could be a bone bruise. how long should i wait until returning to baseball?

Gradual return...: Work your way back into baseball as your swelling/ pain decreases &you regain full motion/ strength. You may also expect that returning to certain activities may be more difficult than others. Part of this will be based on whether you have injured your dominant/ non-dominant wrist & your position. With any persistent symptoms consider additional imaging, such as an mri, to r/o soft tissue inj.