The phrase "as a possible rival" is correct and usable in written English.
It can be used when discussing someone or something that may compete with another in a particular context, such as business, sports, or personal relationships.
Example: "In the upcoming election, she is seen as a possible rival to the incumbent mayor."
Alternatives: "as a potential competitor" or "as a likely adversary."
Shares in Carphone Warehouse were marked down after Phones4u was flushed out as a possible rival for the affections of electricals group Dixons.
The post, which appeared over the weekend, describes Samsung's upcoming watch as a possible rival to Nike's Fuelband or the Fitbit Flex.
Mr. Collins, a Republican, had considered running for governor last year, and he was seen as a possible rival for Mr. Cuomo in 2014.
And in Erie County, Mark Poloncarz, the county comptroller, defeated the incumbent county executive, Chris Collins, a Republican who flirted with running for governor last year, and had been seen as a possible rival to Mr. Cuomo in 2014.
Those charges, his supporters say, are just the latest in a Kremlin-orchestrated assault against Mr. Khodorkovsky, who was once seen as a possible rival to Vladimir V. Putin, Russia's president at the time of his October 2003 arrest.
An attempt on Collot d'Herbois's life (May 23 , 1794 enhanced his popularity, while his energetic advocacy of radical democratic measures within the Jacobin Club led to his emergence as a possible rival to Robespierre and increased the tensions between the two men.
Their plan would look more like the one negotiated in New York last month by Mr. Cuomo, a Democrat who many also see as a potential presidential contender, and a possible rival for Mr. Christie in 2016.
For Mr. Paterson, that appointment would have the advantage of removing a possible rival should he seek election as governor in his own right in 2010.
The visit to Benedict is important, correspondents say, as the existence of a living retired pope has prompted fears of a possible rival power.
He was, however, a possible rival for the thrown of Macedonia, and doubtless suspected by Olympias.
But earlier this week ecommerce giant Alibaba announced another major investment in a facial recognition software business, leading a $600M Series C round in Hong Kong-based SenseTime — as one possible rival example.
