More quarterback drama for the Seattle Seahawks ...
The guy who backs up Russell Wilson is being investigated by police for allegedly punching a man in the face at a bar on St. Patrick's Day ... TMZ Sports has learned.
25-year-old Alex McGough -- a 7th round pick in 2018 out of FIU -- was allegedly at the Green Parrot Pub in Tampa, FL when an altercation broke out ... and things got violent.
TMZ Sports spoke with the alleged victim, 24-year-old Anthony Albino -- who tells us he was reconnecting with an old friend at the bar when McGough approached him and accused him of shooting his shot at his girlfriend.