The company's latest cell phone has no 'rival/rivals'. [=the company's newest cell phone is much better than all others available]
The company's paper is the 'rival' of any in the world. [=it is as good as any paper in the world]
He told a 'rival' version of the story. [=a version that disagrees with another version]
(..) Your late husband's profligacy saw to that. Your wealthiest allies, the Tyrells, are now your enemies. You are surrounded on all sides by rivals for the throne. And the Iron Bank wants to bet on a winner. We don't make bets. We invest in endeavors we deem likely to be successful. (..)2017 TvShow: Game of Thrones Title: The Queen's Justice Season: 7 Episode 3