Definition of wrong-foot:
(v) :
(transitive, by extension) To catch (someone) off balance, off guard; to surprise.
(v) :
(sports) To cause a competitor to move or put weight on the wrong foot, as by making an unexpected move.
(v) :
(transitive, tennis) To play the ball in an unexpected direction, forcing (the opponent) to change direction suddenly.
(v) :
(transitive, by extension) To place (someone) at a tactical disadvantage.