Duel of the Masters

From Author Wars - https://authorwars.com/books/duel-of-the-masters-1968507.html

Overview:

Title: Duel of the Masters
Author: T. Chris Martindale
Year: 1984
Type: Novels
Series: Endless Quest: Series One
Number in Series: 21

Variant Titles:

1984. Duel of the Masters