User blog comment:Toon Ganondorf/Ranking Robot Wars Upsets by whether they affected a tournament/@comment-29558956-20190126124731

Some suggestions from the top of my head:
 * Mortis vs Panic Attack, Series 2.
 * Hypno-Disc vs Behemoth, Extreme 1 All-Stars.
 * Bigger Brother vs Hypno-Disc, Series 5.
 * Storm 2 vs Apollo, Series 8 (both).
 * Cobra vs Sabretooth, World Series.