Bill Bidwill Jr. -- a former Arizona Cardinals exec and the brother of the NFL team's current owner, Michael Bidwill -- was allegedly involved in a wild dispute with his wife earlier this month ... one in which he told cops she hit him in the head with a glass cup.
According to a Paradise Valley Police Dept. incident report, obtained by TMZ Sports, Bidwill Jr. made the allegations to officers at his Arizona home back on June 9.
In the docs, cops say Bidwill Jr.