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.

Morrison had four prior fights in 1991 including first round victories over former heavyweight contenders James Tillis and Pinklon Thomas.

[3] While Mercer was fighting and winning with injuries and under adversity against Kimmuel Odum, Bert Cooper and Francesco Damiani, critics have called his skills primitive.

Morrison rebounded from the loss by winning his next eight fights before meeting George Foreman for the WBO Heavyweight Championship in June 1993, which had been vacated by Moorer earlier in the year.

Morrison was able to outbox Foreman and won by a lopsided unanimous decision to become the new WBO champion, as well as reestablishing him as one of the top heavyweight contenders.