Question:  In what international contest did Howard David Jr. defeat the undisputed heavyweight boxing champion of 1978?
Sentence (from "Philadelphia Jack O'Brien"): Nat Fleischer, founder and editor of "The Ring" Magazine, ranked O'Brien as the No. 2 All-Time Light Heavyweight, and famed boxing promoter Charley Rose ranked him as the No. 3 All-Time Light Heavyweight.
Relevant evidence: No