What was the nickname of the opponent who lost a title fight to Tiger Flowers?
Tiger Flowers: Theodore "Tiger" Flowers (August 5, 1895 – November 16, 1927) was the first African-American middleweight boxing champion, defeating Harry Greb to claim the title in 1926. Harry Greb:  Nicknamed "The Pittsburgh Windmill", he was the American light heavyweight champion from 1922 to 1923 and world middleweight champion from 1923 to 1926.
The Pittsburgh Windmill