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BIRMINGHAM, ALABAMA - FEBRUARY 10: Trent Richardson #33 of the Birmingham Iron is tripped up by Channing Stribling #30 of Memphis Express during an Alliance of American Football game at Legion Field on February 10, 2019 in Birmingham, Alabama. (Photo by Joe Robbins/AAF/Getty Images)

BIRMINGHAM, ALABAMA - FEBRUARY 10:  Trent Richardson #33 of the Birmingham Iron is tripped up by Channing Stribling #30 of Memphis Express during an Alliance of American Football game at Legion Field on February 10, 2019 in Birmingham, Alabama. (Photo by Joe Robbins/AAF/Getty Images)