Ray Mercer vs. Tommy Morrison, billed as Test of Courage, was a professional boxing match contested on October 18, 1991 for the WBO Heavyweight Championship.
Mercer would end the fight only 28 seconds into the fifth round. With Morrison backed up into the corner, Mercer was able to land a 15–punch combination. Clearly hurt from the exchange, Morrison slumped unconscious against the ropes, but the referee allowed Mercer to land several more punishing blows to a now defenseless Morrison before finally ending the fight