beat someone at his or her own game

Idioms

Surpass someone in his or her own specialty or undertaking. For example, Jean knew that if she matched the new store's discount she would keep all her customers and beat the new competitors at their own game. The use of game for any kind of undertaking or scheme dates from the mid-1200s.

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023