simpson prosecutor christopher darden making his case about the trial of the century. >> i can't, youink, you know, my courtroom performance. i did what i did. >> reporter: darden speaking out for the first time since millions tuned in to espn's groundbreaking documentary. "on: made in america" revisiting key moments of the iconic and divisive moment when darden asked o.j. to try on the glove. >> it was the biggest fight chris and i ever had. >> reporter: that moment a defining one in the trial. >> your honor, it appears mr. simpson seems to be having a problem put on the glove. >> reporter: though darden believes it was all an kt. >> it's an illusion. propaganda. >> reporter: now 21 years later a stunning admission. darden conceding that asking for the demonstration was a mistake. >> i absolutely would not do it again, if i had known what i knew back then. >> reporter: he pushes back on the idea that f. lee bailey tricked him into that fateful moment. >> i went over to him and said, chris, you know, you're a good ship but you have the [ bleep ] of a field mouse. if you don't show the