Someone beat their opponent "at their own game" or "in their own game".

[tufguy]

Someone beat their opponent "at their own game" or "in their own game".

Someone beat their opponent "at their own game" or "in their own game". Which one is correct?

 

[kilroy65]

Re: Someone beat their opponent "at their own game" or "in their own game".

Use "at".

 

[teechar]

Re: Someone beat their opponent "at their own game" or "in their own game".

Since that is a metaphorical (not literal) expression, consider also something like "rival" or "competitor", which may be more likely than "opponent" in such a context.