Minor League or College Baseball Jersey? "W"

[cjw]

Hello baseball fans. Could I pls ask for your help identifying the team and or players that may have worn the following jersey? Any assistance would be appreciated. "W" sewn on the front in green with blue border (could be purple..I am color blind)...also has a size 44, Rawlings red, hem size tag along with a size 44 collar tag. Washington? Has number 50 sewn on the verso in green.