beat somebody at their own game

US /biːt ˈsʌm.bɑː.di æt ðer oʊn ɡeɪm/
UK /biːt ˈsʌm.bɑː.di æt ðer oʊn ɡeɪm/
"beat somebody at their own game" picture
1.

ganarle a alguien en su propio juego, pagar con la misma moneda

to use an opponent's own methods to defeat them

:
The new company managed to beat their competitor at their own game by offering better customer service.
La nueva empresa logró ganarle a su competidor en su propio juego ofreciendo un mejor servicio al cliente.
He thought he could trick me, but I decided to beat him at his own game.
Pensó que podía engañarme, pero decidí ganarle en su propio juego.