To play off

to affect; to feign; to practice artifice.
to display; to show; to put in exercise; as, to play off tricks.

See also: Play, Play

Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
References in classic literature ?
This came into my mind: to play off Panda against Dingaan; it was for such an hour of need that I had saved Panda alive.
Hence she had at last consented to play off against Richard Swiveller a stricken market-gardner known to be ready with his offer on the smallest encouragement, and hence--as this occasion had been specially assigned for the purpose--that great anxiety on her part for Richard Swiveller's presence which had occasioned her to leave the note he has ben seen to receive.
There was something extremely provoking, in this obstinately pacific system; it left Brom no alternative but to draw upon the funds of rustic waggery in his disposition, and to play off boorish practical jokes upon his rival.
I think you so clever that the trick you are trying to play off on me doesn't surprise me one bit; I expected it.