The phrase "agents of the rival" is correct and usable in written English.
It can be used to refer to individuals or entities that act on behalf of a competitor or opposing party in a given context.
Example: "The agents of the rival were spotted gathering intelligence on our operations."
Alternatives: "representatives of the competitor" or "operatives of the adversary".
Back then, I was reporting in Wardak, and watched as Raqib detained the agents of rival candidates, while allowing those of his backers to stuff ballots unmolested.
We're seen as representatives, potentially agents, of a rival power.
As suggested by Gill and Hammond [ 29], workers may act as "agents" of the dominant queen, in that they eliminate rival queens once the hierarchy has formed.
Headlines depicting Hirak as drug smugglers, separatists, Polisario proxies, agents of Morocco's rival Algeria or Islamic State-linked insurgents are common.
Furthermore, increasing the sound density could increase the masking effect on the song of the rival: producing more sound per unit of time should increase the proportion of syllables that are not overlapped by syllables of the rival (assuming a static sound density for the rival), whereas it should increase the proportion of syllables of the rival being masked.
Agents of S.H.I.E.L.D.: The Complete First Season.
The graves now being exhumed on the Mexican-U.S. border near Juarez are thought to contain the remains of antidrug agents, informers and rival gangsters who refused the silver offered by the Juarez drug cartel and their allies to join up or shut up during the last half decade.
Intensely private, and no fan of the lunches and parties that most agents regard as happy hunting grounds, she found herself in the spotlight in 1995, when one of her most celebrated clients, Martin Amis, left her for the rival agent Andrew Wylie in pursuit of a mammoth advance for his novel "The Information".
For decades after the end of the 1950-53 Korean war, the rival Koreas sent agents across their heavily fortified border to infiltrate to each other's territory.
Personal collisions are bound to take place at Endeavor, where some clients of television agents like Mr. Emanuel and Mr. Adelstein earn far more money than clients of film agents, said several rival agents.
