Three pairs of rivals without a star consider more drastic strategies to earn their ticket to the final in a new episode of "The Challenge All Stars: Rivals."

Spoiler alert! Find out which 'Challenge' all-stars were eliminated in Week 9, as teams faced off for one of the few spots left in the finals.

Strategy, collaboration, and unexpected turns have long been key components of reality competition shows, and The Challenge: All Stars – Rivals keeps up the heart-pounding drama with every new episode.